The Shocking Truth About What Happened to Matthew in Netflix’s ‘I Will Find You’

Netflix has a knack for turning Harlan Coben’s twisted thrillers into compulsive television, and ‘I Will Find You’ may be its most gut-wrenching adaptation yet. The eight-episode mystery thriller centres on David Burroughs (Sam Worthington), an innocent father serving a life sentence for the murder of his three-year-old son Matthew, a crime he absolutely did not commit.

Coben has noted that this series marked the first time he wrote the novel alongside the television production simultaneously, telling Netflix that he and showrunner Robby Hull “shared a vision in how we wanted to tell ‘I Will Find You’ so it will grip you, and not just grip you and move you, but really get emotional at the end.”

At the heart of everything is one burning question that drives every episode of ‘I Will Find You’: what really happened to Matthew, and is he still alive. The answer, when it finally arrives, hinges on a decade-long conspiracy involving fabricated evidence, a fertility clinic, and someone very close to the investigation itself. If you’ve been watching and your jaw is still somewhere on the floor, here is a full breakdown of how it all unravels.

The Wrongful Conviction That Started It All

David is five years into his sentence when his ex-sister-in-law Rachel Mills (Britt Lower) arrives at the prison with a photograph that changes everything. An old college friend of Rachel’s had recently visited Six Flags in Springfield, and a boy who appears to be Matthew can be spotted in the background of one of the images. David spots a birthmark on the boy’s cheek, the same birthmark Matthew had, and immediately knows his son is out there somewhere.

The prosecution had built its original case against David on DNA evidence and a key witness who claimed to have seen him burying the murder weapon, making the conviction look airtight. In reality, as the series slowly reveals, every single piece of that evidence was manufactured. With the photo in hand, David breaks out of prison aided by Rachel, and the two begin frantically digging into the past to uncover what really happened to his son.

Their escape quickly puts them on the radar of FBI Special Agents Sarah Greer (Logan Browning) and Max Williams (Chi McBride), who are determined to bring them in as part of the Bureau’s Fugitive Task Force. The conspiracy they begin to unravel ultimately spans Revere, Massachusetts and Geneva, Switzerland, with twists and revelations no one could have anticipated.

Helping them along the way is Rachel’s ex-boyfriend Hayden Payne (Milo Ventimiglia), a wealthy playboy from a prominent Boston family who presents himself throughout the series as a loyal and indispensable ally. That framing is, of course, the show’s biggest and most devastating lie.

Matthew’s Kidnapping and the Fertility Clinic Conspiracy

The key to the entire mystery lies in a fertility clinic called BERG Reproductive, which is owned by the Payne family. Before Matthew was born, Cheryl (Erin Richards), David’s ex-wife, had secretly visited BERG to explore getting artificially inseminated using donor sperm, signing up under Rachel’s name to keep the visit hidden from David.

At the same time, Hayden had been using his own sperm through the clinic in a covert effort to get Rachel pregnant, hoping a shared child would reconnect them. When he discovered that the “Rachel” on the BERG client list was actually Cheryl, Hayden put two and two together and arrived at the wrong conclusion entirely, convincing himself that Matthew must be his biological son.

When Hayden saw Matthew at a Fourth of July family party, he became instantly and obsessively certain that the boy was his. He then set his plan into motion on the night of the crime. Matthew was drugged and kidnapped from his bedroom, with his body replaced by that of a murdered child brought from a Swiss orphanage connected to the Payne family.

Payne family lawyers and doctors then planted fabricated evidence, including fake blood samples from Matthew, so that David would be framed for his son’s murder. Matthew was taken to the Payne estate and raised there as Hayden’s son under the name Theo, with no memory of his real identity or his life before the kidnapping.

Hayden Payne and the Villain Twist No One Saw Coming

One of the most disturbing elements of ‘I Will Find You’ is that Hayden spends the majority of the series appearing to help David and Rachel, while actively manipulating them to keep them away from the truth. The facade finally cracks when Rachel receives missing photos from the Six Flags visit proving that Hayden was present with Matthew on the day the photograph was taken.

Adding another layer of horror to the reveal, Gertrude Payne (Madeleine Stowe), Hayden’s powerful mother, had long since discovered that Matthew was not actually Hayden’s biological son. She chose to lie to her son about the DNA results, wanting him to believe he had rescued his own child rather than simply abducted an innocent boy who had nothing to do with him.

In the climax, Rachel uses Hayden’s deep obsession with her to lure him into staying at the Payne estate while David and FBI agent Sarah Greer close in. When Rachel confronts Hayden with the truth that Matthew is David’s son and that his mother deceived him all along, the revelation completely breaks him. He shoots Gertrude dead in a rage and attempts to flee with Matthew.

David and Sarah intercept Hayden before he can escape, and when he turns his weapon on Rachel, Sarah shoots him dead in front of Matthew, ending both the chase and the Payne family’s years-long cover-up.

Does David Finally Get His Son Back

David’s conviction is overturned following the events at the Payne estate, and he is finally reunited with Matthew. The reunion is anything but simple, however, as Matthew has been raised as Theo for years and has no memory of his life before the kidnapping. He cannot recall David or Cheryl at all, and genuinely believed Hayden was his father for the entirety of his childhood.

In the months that follow, the family pieces itself back together. Cheryl reconciles with her new husband Ronald and gives birth to a baby girl, while Rachel publishes a book about David’s mission to find his son that becomes a bestseller. Adam, who loses his position as a police officer for helping David escape from prison, begins working as a private investigator alongside a former colleague.

Eight months on from Matthew’s rescue, a flash-forward montage shows David as a public figure and a free man, with Rachel’s book having turned their story into a national conversation. The entire family reunites at the funeral of David’s father, where he tells Matthew that no matter what happens, he will always find his way back to him. It is a quietly devastating ending that earns the show’s title completely.

‘I Will Find You’ is now streaming on Netflix, and after that Hayden Payne reveal, it would be fascinating to hear from viewers who spotted the clues early on — did the fertility clinic detail tip you off, or did the show have you completely fooled until the very end?