The First 48 Presents: Critical Minutes

Friendship is usually a good thing--but when it goes bad, it can be fatal.

In Tulsa, detectives rely on DNA evidence to track down the killer of a homeless woman who was raped, strangled to death, and thrown into a dumpster. In Harris County, investigators debunk a suspect's self-defence argument.

Three cases from The First 48 archive where witnesses bravely shared case breaking information.

A Dallas retiree is found mysteriously stabbed to death in his own bed. Then, a grisly murder outside a local Cincinnati bar sends shockwaves among its patrons. Finally, a father is ambushed and gunned down in a restaurant parking lot in Tulsa.

Three Tulsa cases where the suspects are female. A killer unknowingly leads detectives to a body. An innocent mother is viciously murdered with a butcher knife. Then, a homeless couple is taken in by a friend, but he ends up dead.

Three cases from The First 48 archive where friends turned into enemies.