Unnatural

Unnatural is an American fantasy drama television series developed by Tom Kapinos that premiered on NBC on September 22, 2010.

The show follows three siblings James, Sam and Danielle who travel across America investigating and combating paranormal events and other unexplained occurrences, many of them based on American urban legends and folklore as well as classic supernatural creatures such as vampires, werewolves, and ghosts.

Main

 * Jensen Ackles as James Harrison:
 * Jared Padalaki as Sam Harrison:
 * TBA as Danielle Harrison:
 * Eliza Dushu as Katherine Winters: James former girlfriend, who is a waitress and ends up coming into contact with him. Later her boyfriend is killed in a fire similar to their mother. James tries to distance himself from her, leading her to eventually begin to piece together the unexplained occurrences in the world.
 * Jeffery Dean Morgan as John Harrison (season 1 - 3 episode 1, guest thereafter season 3): Father of James, Sam and Danielle. Has been hunting the demon who killed his wife for many years.
 * TBA as Michael Hart (season 1 episode 1 - 9, recurring thereafter season 1, 2 and 5): Sam's current boyfriend at the beginning of the series. When Sam returns to hunting, he is clueless about his double life, and just before he starts to realize that something is wrong, he is killed at the end of Shape Shiftier in a tragic fire.
 * Kristen Bell as Laura Price (season 1 - 2, recurring thereafter season 3-5): A college friend of Sam, who is also secretly working for John and keeping an eye on Sam. Laura's mother was possessed by a demon who John hep her kill, she has a mixed relationship with her 17-year old sister Michelle.
 * TBA as Riley Bane (season 2 episode 8 - present, recurring previously season 1 and 2): A former immortal warlock who lost his powers and immortality from Hecate, and eventually formed a strong bond with Sam that eventually lead to a long-term relationship.
 * Mischa Collins as Luke Hunters (season 3 - present): A hunter ally and friend of the family.
 * Lauren Cohram as Bela (Season 3):