Two teenage step-brothers of an 11-year-old girl confess to suffocating her, but with IQs under 60, they maintain their confessions were coerced.

Hank Skinner was convicted of murdering his girlfriend and her two sons, but college students later discovered key pieces of evidence were never tested for DNA.

After a woman's body turns up on the side of the road, police clear her fiancé -- a police officer -- and arrest another man. Later, new evidence emerges.

After the murder of a four-year-old girl, police arrest a neighbor for the crime, but an author writing about the death penalty finds holes in the investigation.

A 17-year-old girl goes to a Mississippi hospital holding her deceased baby. A jury convicts her of murder, but a death penalty expert helps secure a re-trial.

In a California home, someone murders a babysitter while leaving five children unscathed. The parents point to a local transient, who is now in prison.

The leader of a notorious biker club gets the death penalty, is later exonerated, and then again charged by the federal government under the RICO Act.

A man confesses to killing a family of six in a Texas town, but police don't believe he acted alone and charge an accomplice, who claims he did not kill anyone.