Church parishioners call 911 when they find their priest unconscious after he fails to show up for Mass. Police uncover an earlier call made by the victim himself, and track a missing cell phone to a find deranged killer.

In a distressing 911 call, a woman reports someone is breaking into her home. Then the dispatcher hears a scream and a gunshot. Soon, investigators connect the case to a previous home invasion and must solve the crimes before another victim falls.

When a man calls 911 screaming for help but too terrified to give his address, police scramble to find him. As detectives investigate, they uncover a shocking tale of torture and revenge, one that proves that unrequited love can be deadly.

Cleveland 911 receives call from a panicked woman saying a mysterious man forced his way into her home and shot her boyfriend in front of their kids. Detectives have to untangle a twisted web of jealousy to find out who killed this young father and why.

Two distraught women call 911 when they discover their sister brutally murdered. Soon, detectives uncover a stunning surprise and struggle to find a killer whose self-hatred drove him to commit the ultimate sin, in a precedent-setting case.

A concerned man calls 911 to say he's on the phone with his girlfriend, and she's in trouble. When police respond, her two frightened sons answer the door. Their mom has been beaten severely. Detectives soon unveil a tale of obsession and violence.