A father comes home to find his 16 year-old daughter stabbed to death and fingerprints lead to an open and shut case but a piece of gum points to an unlikely suspect.

Eyewitness testimony proves key in a three-year investigation into the deaths of four people found in a Texas home.

Investigators don't have enough evidence for a conviction in the case of a woman strangled to death.

Woman found stabbed and beaten to death and there is little evidence at the scene but her financial records provide the break authorities need to catch the killer.

A closer look at a peeping tom provides police the break they need on an old case of a 23-year-old who was raped and murdered in her apartment.

After Michele Harris disappears on September 11, 2001, blood splatters are found in her home.