7.16 The Wrong Stuff
Original air date: February 23, 2015

“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.

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