Stars line up to appear on 'Castle'

LOS ANGELES, March 29 (UPI) -- Tom Bergeron, Fred Willard, Dan Cortese, French Stewart and Beth Broderick are to guest star in an episode of the U.S. mystery series "Castle," ABC said.

The installment is to air April 12 and will also feature appearances by Kelly Carlson and Bill Bellamy.

"When Castle appears on a late-night talk show to promote his book, 'Heat Wave,' legendary host Bobby Mann leans in during a commercial break and whispers, 'They want me dead.' When Mann dies later that night, seemingly of natural causes, Castle has to convince Beckett that there was foul play," the network said in a synopsis of the episode. "During the investigation, Castle is seduced by a Hollywood hottie, who was the other guest on Bobby Mann's show the night he died."

"Castle" stars Nathan Fillion as mystery novelist Richard Castle and Stana Katic as New York Police Detective Kate Beckett.