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AN ASTRONAUT IN A REALISTIC MARS SIMULATION IS MURDERED, LAUNCHING CASTLE AND BECKETT ONTO A CASE THAT IS OUT OF THIS WORLD, ON ABC'S "CASTLE"

"The Wrong Stuff" - When an astronaut training for a trip to Mars is mysteriously killed inside a Mars simulation, Castle and Beckett don spacesuits to investigate. But when they discover no one inside the sealed simulation could have committed the murder and no one from the outside could get in, the case takes a shocking turn, on "Castle," MONDAY, FEBRUARY 23 (10:01-11:00 p.m., ET) on the ABC Television Network.

"Castle" stars Nathan Fillion as Richard Castle, Stana Katic as NYPD Detective Kate Beckett, Susan Sullivan as Martha Rodgers, Molly Quinn as Alexis Castle, Penny Johnson Jerald as NYPD Captain Victoria Gates, Tamala Jones as Medical Examiner Lanie Parish, Jon Huertas as NYPD Detective Javier Esposito, and Seamus Dever as NYPD Detective Kevin Ryan.

Guest Cast: Yves Bright as Tom Richwood, Gwendoline Yeo as Elise Kim, David Rogers as Viggo Jansen, Sterling K. Brown as Ed Redley, Maxwell Caulfield as Sir Ian Rasher.

"The Wrong Stuff" was written by Terri Miller and directed by Paul Holahan.

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There are homages to 2001, Alien, Star Trek. and Terminator 3: Rise of the Machines.

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