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…

Ally’s heart is broken and not by Billy or Greg. It’s just one big stress fracture. She’s come to the realization that there isn’t anyone out there for her. She…

Ally’s heart is broken and not by Billy or Greg. It’s just one big stress fracture. She’s come to the realization that there isn’t anyone out there for her. She…

The CSIs arrive at their favorite diner only to discover a gruesome crime scene with eight dead victims and a lot of questions

Lily and Marshall try to continue their airport reunion tradition. Barney and Ted offer to keep MacLaren’s open during a blizzard so they can meet up with some college girls.