Mekhi Phifer (Lie to Me, ER) has landed a leading role in the fourth season of Torchwood. Deadline reports he will play CIA agent Rex Matheson in Torchwood: The New World, which is being co-produced by Starz and the BBC.
Matheson is describes as "a fast-tracked high-flyer with a lethal sense of humor who starts to feel his mortality when his life is put in danger."
Phifer joins current Torchwood stars John Barrowman (Captain Jack Harkness) and Eve Myles (Gwen Cooper). It was previously announced that Arlene Tur would join the fourth season in the recurring role of surgeon Vera Juarez.
Torchwood: The New World will air on Starz in the US and BBC One in the UK in summer 2011.