Medical Detectives

The mysterious murder of a young teacher's aide leaves a big hole in her small community. Generations of investigators and a scientific breakthrough leads to a shocking end to a tragic case. S16, Ep5

Bill Sparkman is found hanging naked from a tree with the letters 'FED' scrawled on his chest. With barely any evidence to work with, investigators turn to these letters for answers. S16, Ep2

A single mum looking for love vanishes without a trace. Foul play is confirmed when a pickup truck toolbox opens to reveal her body stuffed inside. Can forensic evidence connect the dots? S16, Ep7

A 20-year-old woman sets out on her bike and never returns. Her body is found a few miles from her house, with a gunshot wound to the head. Eventually modern technology breaks the case. S16, Ep4

Navy lieutenant Lee Hartley is murdered while deployed out to sea. Investigators discover Lee had enemies aboard the ship. S16, Ep8

A building manager finds the lifeless body of a young woman in her first apartment. The case goes cold, then a new forensic tool examines the old evidence. Will science crack the case?

A mortally wounded woman crawls to call 911. Her husband gets a hard look from police, but claims to have an airtight alibi. The intricate forensic science of ballistics is brought to bear. S16, Ep9

A murder victim's final moments are caught on tape. The crime scene looks like a clear robbery-murder. Text evidence at first points to a jilted lover, but will his alibi check out? S16, Ep3

Deeply religious Gail Fulton is shot execution style in the quiet suburbs of Michigan. Surveillance reveals it was a trio of killers. Eventually, detectives get a break.

In 1990, three sex workers are murdered. A serial killer was on the loose and detectives had few clues. Over 20 years later there's a break in the case - and an arrest is finally made. S16, Ep11

In 1984, a young woman is found murdered on the side of a rural Wisconsin driveway after a night of partying. Detectives initially have plenty of suspects, but the case remains unsolved. S16, Ep1