A man is found dead on a residential sidewalk after celebrating his 46th birthday; the homicide team makes a public plea for help after their initial leads fail to pan out.
A motorcycle club president is shot in the head after being forced off the road; a mother of seven is strangled to death in her apartment.
A young woman is shot to death in a park in the middle of the day; a young man is beaten and shot during a gunfight in front of a strip club.
A 21-year-old father is gunned down in a parking lot; investigators get two important pieces of information: the license plate of a car seen fleeing the scene and confirmation that the parking lot has a surveillance camera.
A rookie detective tries to untangle a love triangle that turned deadly; detectives try to piece together what happened inside a car that left one person dead and another critically injured.
After a 33-year-old woman is stabbed to death in Louisville, Ky., police reach out to her family and witnesses to try to track down her killer; police investigate the shooting death of a college student, 19, on a residential street in Minneapolis.
Police try to unravel the mystery surrounding a 28-year-old man shot in his home; Miami authorities race against the clock to catch the killer of a homeless man found stabbed in a park.