THE CASE GETS ACA-CRAZY, ON ABC'S "CASTLE"

Corbin Bleu Guest Stars

"Tone Death" - When a body is found in the theater of Martha's latest show, Castle and Beckett's investigation leads them into the unexpectedly dangerous world of competitive a capella. "High School Musical"'s Corbin Bleu guest stars. "Tone Death" will air on MONDAY, FEBRUARY 8 (10:01-11:00 p.m. ET/PT), on the ABC Television Network.

"Castle" stars Nathan Fillion as Richard Castle, Stana Katic as NYPD Detective Kate Beckett, Tamala Jones as Medical Examiner Lanie Parish, Jon Huertas as NYPD Detective Javier Esposito, Seamus Dever as NYPD Detective Kevin Ryan, Molly Quinn as Alexis Castle with Susan Sullivan as Martha Rodgers. For Season Eight, Toks Olagundoye ("The Neighbors") joined the series as Hayley.

Guest cast: Corbin Bleu as Hunter, Arnell Powell as Chris Jackson, Reilly Brooke Smith as Robyn King, Sonya Eddy as Olivia "Mama" Toussaint.

"Tone Death" was written by Robert Bella and directed by Hanelle Culpepper.

"Castle" is produced by ABC Studios. Executive producers are Terence Paul Winter, Alexi Hawley, Rob Bowman, Rob Hanning and Armyan Bernstein.

"Castle" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1 channel surround sound. A TV parental guideline will be assigned closer to airdate.