I AM A KILLER — Season 1

After years in solitary confinement, James Robertson admits to murdering his new cellmate as an escape to the better conditions on death row.

Kenneth Foster's death sentence is commuted just hours before his execution, but he asserts that his punishment under an unusual Texas law is unfair.

Raised in an environment of drug addiction and crime, teenager Justin Dickens commits murder but disputes the prosecutor's version of events.

Sentenced for a triple murder linked by police to Satanism, Miguel Angel Martinez becomes the youngest person ever on death row in Texas.

After shooting his ex-girlfriend and her new lover, Charles Thompson is charged with manslaughter -- until his ex dies due to a hospital error.

No one -- including David Lewis himself -- disputes that he committed murder. But Lewis's mental fitness remains in doubt despite his death sentence.

High on a drug that fuels his paranoia, Deandra Buchanan fatally shoots his aunt, stepfather and girlfriend -- a crime he claims he can't recall.

Robert Shafer and a friend target a same-sex couple in a robbery, but their crime spins out of control into kidnapping and double murder.

Teenage drug abuser Joshua Nelson murders a friend in cold blood to steal his car, but other shocking motivations for the crime emerge at his trial.

Convicted murderer Wayne Doty admits his guilt but requests that his execution be carried out by electric chair, a method no longer used in Florida.