A woman with undiagnosed rectal bleeding; body part stuck in a camp stove; a rare massive stroke.

A shooting victim is brought to the hospital. A Rottweiler gets loose in the ER.

A Dialysis patient is bleeding and doctors can't get it to stop. A naked man falls onto a cactus.

A stabbing victim's heart has a hole in it, and it must be pumped by hand to keep him alive.

A stroke patient's wife and two girlfriends fight over him; soldiers who lost limbs in an IED explosion; a child's play bite.

Treatment pf a young boy's broken leg turns into an investigation that may reveal child abuse.

A doctor struggles with the decision to revive an older patient after prolonged CPR.