04/09/2009 (10:00PM - 10:59PM) (Thursday) : UNKNOWN TROUBLE -- From the executive producer of "ER" and "The West Wing" -- On his first day on the beat, rookie cop Ben Sherman (Benjamin McKenzie, "The O.C.") finds himself questioning if he's cut out for the job. Adding to the pressure, Sherman is assigned to no-nonsense, cut to the chase training officer, veteran John Cooper (Michael Cudlitz, "Band of Brothers"). Meanwhile, a young girl is kidnapped from her front yard and Detectives Lydia Adams (Regina King, "Jerry McGuire") and Russell Clarke (Tom Everett Scott, "That Thing You Do!") investigate the disappearance while comforting her distraught parents. Michael McGrady ("The Thin Line"), Kevin Alejandro ("Ugly Betty"), Shawn Hatosy ("Alpha Dog") and Arija Bareikis ("Crossing Jordan") also star.