The "True Blood" alum played Liv, Constantine's partner in crime, on the upcoming NBC take on "Hellblazer." That character will be written out and replaced by another from the source material.

NBC's rookie comic drama Constantine is parting ways with its female lead.

True Blood alum Lucy Griffiths has exited the network's adaptation of Hellblazer after the show's creators opted to move in a different direction, The Hollywood Reporter has learned.

Constantine centers on master of the occult John Constantine (Criminal Minds' Matt Ryan), who struggles with his faith as he is haunted by the sins of his past and is suddenly thrust into the role of defending humanity from the gathering forces of darkness.

PHOTOS Broadcast TV's New 2014-15 Shows

Griffiths played Liv, the female lead and an offbeat woman who finds herself teamed with Constantine after she is marked for death by a powerful demon. With the ability to see the supernatural world among us, she becomes a key player in the battle between good and evil. NBC will not recast the role but instead will add the character of Zed, a familiar name from the Constantine books. Zed, a foil for the show's title character who becomes his right-hand woman, has not yet been cast. She will appear in an early episode of the series, with additional characters from Hellblazer and the occult DC universe to be introduced later. Zed will, however, be the first to appear.

From Warner Bros. Television, Dexter's Daniel Cerone penned the teleplay and crafted the story alongside David Goyer (Batman Begins). Neil Marshall directed the pilot.

Constantine airs Fridays at 10 p.m. starting Oct. 24 on NBC. Griffiths (Robin Hood) is repped by DBA, Principal Entertainment and Hamilton Hodell.

Email: Lesley.Goldberg@THR.com

Twitter: @Snoodit