A dramatization of the 2008–2011 Washington and Colorado serial rape cases, Unbelievable follows "Marie, a teenager who was charged with lying about having been raped, and the two detectives who followed a twisting path to arrive at the truth".[5] The program draws from "An Unbelievable Story of Rape" (2015), a Pulitzer Prize-winning article by T. Christian Miller and Ken Armstrong for ProPublica and The Marshall Project.[2]