Darrin Lopez, a disabled Special Forces veteran, faces a murder charge for shooting his girlfriend's husband. But investigators discover there's a much more to the story than a simple love triangle gone wrong. Can Lopez's testimony convince jurors this was a justified killing?

Florida periodontist Charlie Adelson stands accused of hiring two hitmen to murder his ex-brother-in-law, Dan Markel, in order to free his sister from a nasty child custody dispute.