Michael C. Hall, Jennifer Carpenter, Julie Benz
Seasons: 1-3
Network: Showtime

Story: Dexter Morgan works for the Miami Metro Police Department as a blood pattern analyst. That's just his day job, at night he's a serial killer who goes around killing off some of societies less desirable elements.

Matthew Fox, Evangeline Lilly, Josh Holloway
Seasons: 1-4
Network: ABC

Story: Four dozen people survived a plane crash and are lost on an uncharted island in the South Pacific. As the strangers band together for comfort and support, they realise several things are very strange about their new home.

Jared Padalecki, Jensen Ackles, Joe Morgan
Seasons: 1-4
Network: The CW

Story: Two brothers witness their mother's paranormal death as children. One manages to move on and go to college, but is pulled back in to the job and together they hunt down all manner of mysteries and monsters.