After the murder of 15-year-old Milli Penn, Grand Rapids detectives investigate the masked shooter, rumored to be another teenager linked to a fight club. Then, another shooting strikes and detectives must solve the case before more lives are lost.

Grand Rapids detectives investigate a victim with a history of domestic complaints. The shooter claims self-defense, but her actions raise doubts.

A jail informant tips off Grand Rapids detectives to an accidental overdose that looks suspiciously like murder.

Twin brothers claim a deadly gunfight outside a bar is self-defense, but for one victim, detectives believe otherwise. Can they prove it was murder?

A stray bullet kills 15-year-old La’kijah Williams

Cameras follow the Grand Rapids police on patrol

Aspiring rapper, Michael Munson is found shot