is inspired by the true-life story of Melissa G. Moore; the critically acclaimed podcast from iHeartPodcasts and Moore; and the autobiography Shattered Silence, written by Moore with M. Bridget Cook. At 15, Moore discovered that her beloved father was the prolific serial killer known as . As an adult, she has changed her name and guarded her secret while her father has been serving life in prison.Jumping off from Moore's true-life story, the Paramount+ Original Series follows Melissa and her incarcerated father, known as the Killer. After decades of no contact, he finally finds a way to force himself back into his daughter's life. In a race against the clock, Melissa must find out if an innocent man is going to be put to death for a crime her father committed. Throughout, she discovers the impact her father had on his victims' families and must face a reckoning of her own identity.