The Last Seen cast is built around one impossible question: is the teenage caller who reaches Ian Ridley really the daughter he lost 11 years ago? Patrick Brammall leads as Ian, while Chloe Jean Lourdes plays Sarah Reid, the girl at the centre of a struggle involving two families and several conflicting versions of the truth.
This spoiler-light guide maps the eight principal Apple TV credits and explains the relationships that drive the mystery. For the premiere date and full six-episode rollout, see our Last Seen OTT release guide.
Last Seen cast at a glance
| Actor | Character | Status |
|---|---|---|
| Patrick Brammall | Ian Ridley | Central lead |
| Chloe Jean Lourdes | Sarah Reid | Mystery at the centre |
| Brendan Cowell | Henry Reid | Sarah’s claimed father |
| Maxine Peake | Jenna Reid | Sarah’s claimed mother |
| Jessica Wren | Debbie McGuire | Challenges Ian’s certainty |
| Zahra Newman | Isabel “Izzy” Pena | Detective |
| Daniel Henshall | Donald Reid | Principal ensemble |
| Tobias Muhafidin | Dean Ridley | Principal ensemble |
Patrick Brammall as Ian Ridley
Patrick Brammall plays Ian Ridley, a former police detective whose daughter Maggie vanished from her bed when she was three. Eleven years later, Ian works as a police dispatcher and has never accepted that Maggie is gone for good.
The case surges back into his life when a frightened teenager calls for help. She first gives her name as Sarah, but something in the conversation convinces Ian that he may be hearing Maggie. His certainty powers the search, but it also makes him dangerous to anyone who stands between him and the reunion he has imagined for more than a decade.
Chloe Jean Lourdes as Sarah Reid
Apple TV credits Chloe Jean Lourdes as Sarah Reid. She is the teenage caller Ian believes could be Maggie, but Sarah says Henry and Jenna Reid are her parents. That conflict makes her more than a missing-person clue. She is a young woman with an existing life, a name and parents of her own.
The cast interviews around the series keep returning to Sarah’s agency. Ian, Henry and Jenna can all argue over whose child she is, but the moral centre of the story is what Sarah wants once those competing claims crash into each other.
Brendan Cowell as Henry Reid
Brendan Cowell plays Henry Reid, Jenna’s husband and the man Sarah knows as her father. Ian sees Henry as part of the wall separating him from the truth, but the actors resist a simple hero-versus-villain reading.
Patrick Brammall has described Ian and Henry as two sides of the same coin. Both men are shaped by love, secrecy and choices that hurt other people. That parallel gives the mystery its sharpest tension: Ian may be chasing a terrible wrong, yet his single-minded pursuit can create fresh damage.
Maxine Peake as Jenna Reid
Maxine Peake plays Jenna Reid, Henry’s wife and Sarah’s claimed mother. Jenna is presented as isolated and deeply traumatised, with Peake describing her as a woman who has made difficult and troubling choices.
That places Jenna inside the emotional centre of the series rather than on the edge of Ian’s investigation. The Reid household represents the life Sarah already has, so every step Ian takes toward proving his belief threatens to tear apart another family.
Jessica Wren as Debbie McGuire
Jessica Wren plays Debbie McGuire. In the trailer, Debbie urges Ian to let go and asks how he can be sure the caller is Maggie. A separate voice warns him to leave their daughter alone, but the trailer does not identify that speaker.
Debbie’s resistance adds another conflict to the mystery. Ian is not only challenging Henry and Jenna’s claim over Sarah. His renewed certainty also reopens the damage caused by Maggie’s disappearance for people who do not share his belief in the new lead.
Zahra Newman as Isabel “Izzy” Pena
Zahra Newman plays Isabel “Izzy” Pena. The official trailer identifies her as Detective Peña and shows her asking Ian how he can know the caller is Maggie.
That makes Izzy an investigative counterweight to Ian’s conviction. The trailer shows her testing his theory rather than accepting it on faith. Her question asks for proof where Ian hears certainty.
Daniel Henshall as Donald Reid and Tobias Muhafidin as Dean Ridley
Daniel Henshall plays Donald Reid, while Tobias Muhafidin plays Dean Ridley. Apple TV lists both among the principal cast, but their exact family relationships and story functions remain undisclosed.
How the Last Seen characters connect
The cleanest way to read the ensemble is as two damaged family structures colliding around Sarah. Ian hears the possibility of Maggie and moves toward reunion. Henry and Jenna defend the daughter and home they know. Debbie sees Ian’s hope becoming another threat, while Izzy keeps pressing the question his grief cannot answer on its own.
That makes Last Seen more than a search thriller. Its cast is arranged around competing versions of parenthood, memory and protection, with Sarah caught between adults making rival claims about her future. The mystery begins with Ian’s phone call, but the character drama turns on the cost of his pursuit, whether or not his belief proves correct.
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