Peter Hermann is an American actor, producer and children’s author best known for playing Charles Brooks in Younger, Trevor Langan in Law & Order: Special Victims Unit and Jack Boyle in Blue Bloods. Born on August 15, 1967, Hermann turned 59 in 2026. He is also famous for his long marriage to SVU star Mariska Hargitay. The couple met through the series, married in 2004 and celebrated their 22nd wedding anniversary on August 28, 2026. They have three children: August, Amaya and Andrew.
Peter Hermann Quick Bio
| Detail | Information |
|---|---|
| Full Name | Karl Peter Frederic Albert Hermann |
| Professional Name | Peter Hermann |
| Date of Birth | August 15, 1967 |
| Age in 2026 | 59 |
| Birthplace | New York City, New York |
| Childhood | Raised in Germany until age 10 |
| Nationality | American |
| Education | Yale University |
| Profession | Actor, producer and author |
| Famous TV Role | Charles Brooks in Younger |
| SVU Character | Defense Attorney Trevor Langan |
| Blue Bloods Character | Jack Boyle |
| Wife | Mariska Hargitay |
| Marriage Date | August 28, 2004 |
| Children | August, Amaya and Andrew |
| Children’s Book | If the S in Moose Comes Loose |
| Current 2026 Work | Returned as Trevor Langan on SVU |
| Net Worth | Not independently verified |
Who Is Peter Hermann?
Peter Hermann is one of those actors viewers may recognize from several completely different television worlds.
A fan of romantic comedy-drama may know him as Charles Brooks from Younger.
A longtime Law & Order: SVU viewer may immediately recognize defense attorney Trevor Langan.
A Blue Bloods fan may know him as Jack Boyle, Erin Reagan’s former husband.
And millions of people simply know him as Mariska Hargitay’s husband.
But his story started long before he entered television.
Hermann spent his earliest childhood in Germany, worked as a teacher before acting, became a magazine fact-checker and speaks several languages.
That background makes him very different from the simple “celebrity husband” label sometimes attached to his name.
How Old Is Peter Hermann?
Peter Hermann was born on August 15, 1967, in New York City.
He turned 59 years old on August 15, 2026.
His full birth name is listed as Karl Peter Frederic Albert Hermann.
Although he was born in America, his childhood did not initially feel particularly American.
His parents were German, and shortly after Peter was born, the family returned to Germany. He remained there until he was about ten years old.
That explains another interesting fact about him.
English was not the main language of his early childhood.
Peter Hermann Grew Up in Germany
Hermann has explained that he was born in New York but moved to Germany when he was only a baby.
He lived there for the first decade of his life before returning to the United States.
Because he came back while still young, he learned English without keeping a noticeable German accent.
He continued speaking German with his parents.
His professional biography also says he speaks English, German, Spanish and French.
That multilingual background later became useful for an actor working in very different kinds of productions.
Peter Hermann Went to Yale
Hermann later attended Yale University.
His education did not immediately lead him toward Hollywood.
In fact, before becoming an actor, he chose a profession very different from television.
He became a teacher.
His biography says he joined Teach For America, where he taught English as a second language and special education.
That experience is one of the most interesting parts of his early career.
He was helping children in classrooms before millions of television viewers ever knew his face.
Peter Worked at Vanity Fair Before Acting
After teaching, Hermann moved into another unexpected job.
He became a fact-checker at Vanity Fair.
A fact-checker has an important job.
If an article says someone was born in a certain year, the fact-checker verifies it.
If a writer says an event happened in a certain city, that detail needs checking too.
It is very different from acting, but both careers depend heavily on careful reading and attention to language.
Eventually, Hermann moved from checking other people’s stories to performing stories himself.
His Early Acting Career
Peter began collecting television credits during the 1990s.
One of his earliest substantial roles was Dr. Michael Burke on Guiding Light, where he appeared during 1997 and 1998.
He then moved through a long series of guest roles.
That is how many television actors build careers.
One episode becomes three.
Three episodes become a recurring role.
Then, eventually, a producer offers something bigger.
For Peter, one seemingly ordinary guest role changed not only his career but his entire personal life.
That show was Law & Order: Special Victims Unit.
Peter Hermann as Trevor Langan on SVU
Hermann first appeared on Law & Order: SVU as Trevor Langan, a defense attorney.
The character became a recurring part of the series.
Professional listings credit Hermann as Langan beginning in 2002, and he continued returning over many years.
Trevor is often placed on the opposite side of the courtroom from Olivia Benson and her colleagues.
That makes the real-life story funny.
On screen, Peter could challenge Mariska Hargitay’s character.
Off screen, the two fell in love.
How Did Peter Hermann Meet Mariska Hargitay?
Peter and Mariska met when he guest-starred during Season 3 of Law & Order: SVU.
After filming, Peter asked Mariska to attend a church service with him.
That became their first date.
Mariska later said the experience felt like being hit by a lightning bolt.
She began crying during the service because she suddenly felt Peter was the man she would marry.
Peter initially thought she was simply emotional because of the church service.
She knew something bigger was happening.
It is one of Hollywood’s more unusual first-date stories.
No expensive restaurant.
No giant red-carpet event.
Just church.
Their Relationship Was Not Perfect From Day One
The couple did not instantly move from that first date to marriage.
They dated for about two years.
Like most couples, they had to learn how their personalities fit together.
Peter later said one moment that influenced his decision to marry Mariska came when he attended her 40th birthday celebration.
He saw her surrounded by people who genuinely loved her and realized he wanted to become part of that family and community.
That feeling eventually led to a wedding.
When Did Peter Hermann Marry Mariska Hargitay?
Peter Hermann and Mariska Hargitay married on August 28, 2004, in Santa Barbara, California.
Peter was 37.
Mariska was 40.
Their wedding arrived roughly two years after they met on SVU.
As of August 28, 2026, they have been married for 22 years. People marked the anniversary with a look back at their family life and relationship.
That is an impressive milestone for any marriage.
It is especially notable when both partners have spent decades working in entertainment.
Are Peter Hermann and Mariska Hargitay Still Married?
Yes.
They remain married in 2026.
In fact, Peter accompanied Mariska to the Creative Arts Emmy Awards on September 5, 2026, where she celebrated major wins for her documentary My Mom Jayne.
Those recent appearances make their current status very clear.
This is not an old Hollywood marriage that quietly ended years ago.
They are still together and continue supporting each other professionally.
What Is the Secret to Their Long Marriage?
Peter and Mariska often mention laughter.
In a joint interview about their marriage, Peter said laughter helps them find their way back to one another even after difficult moments.
The couple also emphasized that they share a basic understanding of where they are heading together.
That does not mean 22 years of marriage have been perfect.
They have never claimed that.
What they describe instead is a relationship where two people continue choosing the same larger direction.
How Many Children Do Peter Hermann and Mariska Hargitay Have?
Peter and Mariska have three children.
Their eldest son, August Miklós Friedrich Hermann, was born on June 28, 2006.
They later adopted daughter Amaya Josephine Hermann in 2011 and son Andrew Nicolas Hargitay Hermann later the same year.
Their family was therefore built through both birth and adoption.
Mariska has spoken openly about how meaningful that mixture is to her.
She grew up in a blended family herself and has said families can be created in many different ways.
Who Is August Hermann?
August is Peter and Mariska’s eldest child.
He was born on June 28, 2006, making him 20 years old in 2026.
His arrival came only two years after his parents married.
Mariska won her first Emmy for SVU shortly afterward and thanked both Peter and their new baby during her acceptance speech.
The couple have generally avoided pushing August into celebrity publicity.
That same protection extends to all three children.
Amaya and Andrew Joined the Family in 2011
In 2011, the Hermann-Hargitay family changed very quickly.
First, Peter and Mariska adopted Amaya Josephine.
Then only months later, another adoption opportunity appeared and they welcomed Andrew Nicolas.
Mariska has recalled that they never expected the second adoption to happen so quickly.
But the family felt the opportunity was right.
By the end of 2011, Peter and Mariska had become parents of three.
Peter Hermann in Younger
For many viewers, Peter Hermann’s biggest role outside SVU is Charles Brooks in Younger.
The comedy-drama premiered in 2015 and starred Sutton Foster as Liza Miller, a 40-year-old woman pretending to be 26 so she can restart her publishing career.
Peter played Charles, a handsome publishing executive who becomes deeply involved in Liza’s complicated personal and professional life.
IMDb credits Hermann with 73 episodes from 2015 through 2021.
The role dramatically increased his public recognition.
Peter even joked that during Younger’s popularity, some fans began recognizing him before Mariska.
For the husband of one of television’s longest-running drama stars, that must have been amusing.
Why Charles Brooks Became Popular
Charles was very different from Trevor Langan.
Trevor is a lawyer.
Charles is a book publisher.
And Younger gave Peter a romantic leading-man role rather than courtroom conflict.
His character became part of the show’s central romantic triangle.
Fans debated whether Liza belonged with Charles or Josh for years.
That gave Hermann something every actor wants:
A role viewers cared enough about to argue over.
The series finished in 2021 after seven seasons.
Peter Hermann on Blue Bloods
Peter also became a familiar recurring face on Blue Bloods.
He played Jack Boyle, Erin Reagan’s former husband and the father of Nicky Reagan-Boyle.
CBS first featured Hermann as Jack in Season 3 in 2012.
He continued appearing until the show’s final season in 2024.
IMDb credits him with 21 episodes between 2012 and 2024.
That gave Hermann recurring roles on three major television shows:
SVU.
Younger.
Blue Bloods.
Very few working actors maintain that kind of long television presence.
Peter Hermann’s Movie Career
Peter has also appeared in films.
One of his most serious roles came in United 93 in 2006.
He played passenger Jeremy Glick in the film about United Airlines Flight 93 and the September 11 attacks.
His other film credits include Edge of Darkness, Trouble with the Curve, Philomena, 13: The Musical and the 2022 remake of Goodnight Mommy.
That résumé demonstrates something important.
Television may be where audiences recognize him most.
But it is not his only work.
Peter Hermann Became a Children’s Author
Peter eventually returned to his love of language in another way.
He wrote the children’s book If the S in Moose Comes Loose.
HarperCollins published the book in 2018, with illustrations by Matthew Cordell.
The story plays with letters.
When the “S” and “E” in the word “MOOSE” come loose, Moose disappears.
Cow must find letters to make the word “GLUE” and put her friend back together.
It is a simple idea, but it turns spelling into a visual adventure.
Kirkus praised the book’s rhyme and wordplay, while Publishers Weekly described the letter-changing concept as a source of humor.
Peter’s Teaching Past Makes the Book More Interesting
Remember that Peter was once a teacher.
That makes his move into children’s writing feel surprisingly natural.
He had already worked with students.
He loves language.
He speaks several languages.
Then he created a book where letters themselves become part of the story.
The book may look like a completely separate project from acting, but it actually connects several parts of Hermann’s life.
Teaching, language and storytelling all meet in one place.
Did Peter Hermann Return to SVU in 2026?
Yes.
Peter returned as defense attorney Trevor Langan in the 2026 Law & Order: SVU episode “Impropriety.”
That means his connection with the series now stretches across more than two decades.
The role is particularly special because SVU is where he met Mariska.
Every Trevor Langan return therefore carries a little real-life history behind it.
A television guest role introduced Peter to the woman he eventually married.
Twenty-four years later, he is still returning to the same fictional world.
What Else Is Peter Hermann Doing in 2026?
IMDb currently lists a completed 2026 short film called The Desk, with Hermann playing Ed.
It also lists him in the upcoming series Enigma Variations as Isaac.
He also appeared publicly during Mariska Hargitay’s Broadway run in Every Brilliant Thing in summer 2026, even joining her onstage around her final bow.
So Peter has not retired.
His work simply moves between acting, family life and occasional creative projects without constant publicity.
Peter Supported Mariska at the 2026 Emmys
One of Peter’s most recent public appearances came on September 5, 2026.
He joined Mariska at the Creative Arts Emmy Awards, where her documentary My Mom Jayne: A Film by Mariska Hargitay won major honors.
Peter stood beside her as she celebrated.
That moment fits the public pattern of their marriage.
When one spouse has a major professional achievement, the other frequently appears in support.
It also came only days after their 22nd wedding anniversary.
Peter Hermann’s Net Worth
Several celebrity websites publish exact estimates for Peter Hermann’s net worth.
Those figures should be treated cautiously.
His career clearly includes significant earning sources: television acting, films, production work and publishing.
But the public does not know his complete finances.
Real net worth would require reliable information about salaries, investments, property, taxes, debts and shared marital assets.
Mariska Hargitay’s wealth should not simply be assigned to Peter either.
The safest answer is that Peter Hermann’s individual net worth has not been independently verified.
Why Peter Hermann Is More Than Mariska Hargitay’s Husband
Mariska is one of television’s most recognizable actresses.
Naturally, that makes “Mariska Hargitay’s husband” one of the first phrases connected with Peter.
But his own résumé is substantial.
He taught students before acting.
He worked at Vanity Fair.
He became Trevor Langan.
He spent seven seasons as Charles Brooks.
He played Jack Boyle for more than a decade.
He appeared in movies including United 93 and Philomena.
He wrote a children’s book.
And he continues acting in 2026.
That is an entire career of its own.
Final Thoughts
Peter Hermann has one of Hollywood’s most interesting quiet careers.
He was born in New York but spent his childhood in Germany.
He attended Yale, taught through Teach For America and worked as a fact-checker before acting became his profession.
Then came television.
Guiding Light helped establish him.
SVU changed his life.
The role of Trevor Langan introduced him to Mariska Hargitay, and a church date eventually led to marriage. They married in Santa Barbara on August 28, 2004.
Their family grew to include August, Amaya and Andrew.
Meanwhile, Hermann’s own career continued expanding through Younger, Blue Bloods, films and children’s writing.
In 2026, he turned 59 and returned again to SVU as Trevor Langan.
He and Mariska also celebrated 22 years of marriage, then appeared together days later during her successful Emmy weekend.
That makes the simplest description of Peter Hermann incomplete.
Yes, he is Mariska Hargitay’s husband.
But he is also an actor, teacher-turned-performer, author and father whose own career has lasted nearly three decades.
FAQs About Peter Hermann
Who is Peter Hermann?
Peter Hermann is an American actor, producer and author known for Younger, Law & Order: SVU and Blue Bloods.
How old is Peter Hermann in 2026?
He was born on August 15, 1967, so he turned 59 in 2026.
What is Peter Hermann’s full name?
His full birth name is Karl Peter Frederic Albert Hermann.
Is Peter Hermann German?
He is American-born but was raised in Germany until around age ten by German parents.
Who is Peter Hermann married to?
He is married to Law & Order: SVU star Mariska Hargitay.
How did Peter Hermann meet Mariska Hargitay?
They met after Hermann was cast as Trevor Langan on SVU. Their first date was a church service.
When did Peter Hermann and Mariska Hargitay marry?
They married on August 28, 2004, in Santa Barbara, California.
Are Peter Hermann and Mariska still married?
Yes. They celebrated their 22nd wedding anniversary in August 2026.
How many children do they have?
They have three children: August, Amaya and Andrew.
Were Peter Hermann’s children adopted?
August is their biological son. Amaya and Andrew joined the family through adoption in 2011.
Who does Peter Hermann play on Younger?
He plays publishing executive Charles Brooks and appeared across the series from 2015 to 2021.
Who does Peter Hermann play on SVU?
He plays defense attorney Trevor Langan.
Was Peter Hermann on SVU in 2026?
Yes. He returned as Trevor Langan in the Season 27 episode “Impropriety.”
Who did Peter Hermann play on Blue Bloods?
He played Jack Boyle, Erin Reagan’s former husband. IMDb credits him with 21 appearances from 2012 to 2024.
Was Peter Hermann a teacher?
Yes. Before acting, he taught ESL and special education through Teach For America.
Did Peter Hermann work for Vanity Fair?
Yes. He worked as a fact-checker at Vanity Fair before his acting career.
Did Peter Hermann write a book?
Yes. He wrote the children’s picture book If the S in Moose Comes Loose, published in 2018.
What movies has Peter Hermann appeared in?
His films include United 93, Edge of Darkness, Trouble with the Curve, Philomena, 13: The Musical and Goodnight Mommy.
What is Peter Hermann doing now?
In 2026, he returned to SVU, has additional acting work listed in development or production, and continues making public appearances with Mariska.
What is Peter Hermann’s net worth?
His exact individual net worth has not been independently verified. Online figures should be treated as estimates.
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