When an astronaut in a Mars simulation is killed, Castle and Beckett don spacesuits and enter the simulation to investigate. Much to their surprise, it seems no one inside and no one outside could have committed the murder.
Castle is delighted to help investigate the murder of a 'Mars astronaut' in a New York simulation site. The team must figure out how it was done, who gained access, and the motive, so they scrutinize the astronaut's team and drop-out, site crew, ICT tycoon owner, and relevant loved ones.—KGF Vissers
