Criminal Minds: "Masterpiece" - The team must profile a self-confessed serial killer who turns himself in, but sends them on a massive manhunt to find his latest victims before it is too late, on a rebroadcast of CRIMINAL MINDS, Wednesday, April 1 (9:00-10:00 PM, ET/PT) on CBS. Jason Alexander ("Seinfeld"), Ali Landry ("Eve") and Nicholas Brendon ("Buffy the Vampire Slayer") guest star. (Originally broadcast 11/19/08).