A look at some of Europe's and America's most horrific serial killers and how bizarrely simple blunders eventually brought them to justice.
Spy Ops
The Killer Closer
Born Evil: The Serial Killer and the Savior
Cabin in the Woods
Dateline
Into the Fire: The Lost Daughter
Merseyside Detectives: The Murders of Ashley and Olivia
Gaia: A Death on Dancing Ledge
The Chameleon Killer
This Is a Robbery: The World's Biggest Art Heist
Braqueurs
No One Saw a Thing
