Death Comes Knocking

Teen sees his mom killed with an axe; doorbell camera identifies her ex-partner as the perpetrator.

Former NBA player Andre Emmett is gunned down; doorbell camera footage leads police to the shooter.

CEO Fahim Saleh is found dead in his apartment; a masked man is caught on elevator security camera.

Police officer reports his wife has shot herself; doorbell camera footage casts doubt on his story.

A stranger is suspected for Robert Penn's murder; doorbell camera points to someone close to home.

Maria Muñoz dies, investigators suspect suicide; doorbell camera footage tells a different story.

Airline executive is murdered; detectives discover his wife manipulates the killer into the crime.

Teen Ronan Kanda is stabbed to death; police discover his murder is a case of mistaken identity.

When Jehovah's Witness Sharon Gordon is murdered, surveillance footage secures a conviction.

When Nicki Collingbourne is murdered in her home, the prime suspect is a man caught on CCTV.