Inspired by real events, a teen reports and eventually recants her reported rape, while two female detectives, states away, investigate evidence that could reveal the truth.

Based on The Marshall Project and ProPublica Pulitzer Prize-winning article, "An Unbelievable Story of Rape," written by T. Christian Miller and Ken Armstrong, and the This American Life radio episode, “Anatomy of Doubt”, with episodes directed by Oscar nominees Susannah Grant and Lisa Cholodenko,  "Unbelievable" is a story of unspeakable trauma, unwavering tenacity, and astounding resilience.

Showrunner Susannah Grant executive produces the series, from CBS Television Studios,  along with Sarah Timberman, Carl Beverly, Lisa Cholodenko, Ayelet Waldman, Michael Chabon,  Katie Couric, Richard Tofel, Neil Barsky, Robyn Semien, and Marie.