Best friends on social media, Allysa and Morgan share a love of three things: thriller novels, true crime, and keeping secrets from each other. As soon as Allysa asks Morgan to be her plus one at a funeral, Morgan jumps on the first available flight. Burying the dead might unearth the truth about what happened to Allysa's brother twenty years earlier. She's never believed he simply left town without saying goodbye. Once they learn he's the last known victim of a serial killer, Allysa and Morgan decide to do what the police couldn't - bring him to justice. When the hunters become the hunted, only one question remains - Do you know your friend well enough to save her life?