In Netflix’s miniseries ‘Unbelievable‘, Toni Collette plays detective Grace Rasmussen, Merritt Wever plays detective Karen Duvall, and Kaitlyn Dever plays victim Marie Adler. The series is based on a true story.
Main cast
- Detective Grace RasmussenToni Collette1Main
- Detective Karen DuvallMerritt Wever1Main
- Marie AdlerKaitlyn Dever1Main
Supporting cast
- Detective ParkerEric Lange1Supp
- Detective PruittBill Fagerbakke1Supp
- JudithElizabeth Marvel1Supp
- DDA HarkinsDale Dickey1Supp
- Chris McCarthyKai Lennox1Supp
- AlAustin Hebert1Supp
Guest & voice
- TyDaniyar1Guest
- AmberAlyssa Bresnahan1Guest
- SarahAnnaleigh Ashford1Guest
- StacyBridget Everett1Guest
- RomanBlake Ellis1Guest
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About this cast
Unbelievable is a 2019 Netflix true-crime miniseries based on the Pulitzer Prize-winning article ‘An Unbelievable Story of Rape’ by T. Christian Miller and Ken Armstrong. It follows two female detectives who uncover a serial rapist after a victim recants her initial report due to police pressure. The series stars Toni Collette, Merritt Wever and Kaitlyn Dever in the lead roles.
FAQs
Who plays Marie Adler in Unbelievable?
Kaitlyn Dever plays Marie Adler, the young woman whose rape case is initially mishandled.
Who plays Detective Grace Rasmussen in Unbelievable?
Toni Collette plays Detective Grace Rasmussen, a tough investigator who helps solve the case.
Is Unbelievable based on a true story?
Yes, it is based on the true story of a serial rapist in Washington and Colorado, and the detectives who caught him.
Who plays Detective Karen Duvall in Unbelievable?
Merritt Wever plays Detective Karen Duvall, who works with Rasmussen to identify the perpetrator.
How many episodes are in Unbelievable?
The miniseries has eight episodes, all released on Netflix in 2019.
Sources & where to watch: IMDb · Wikipedia · Where to watch (JustWatch UK) · Updated June 2026