When several research scientists are found frozen to death, Mulder and Scully being to suspect the murders may have been committed by a time traveler from the future.
A comic haunts a comedy club in which he used to perform, and Melinda helps him find closure following his suicide.
After discovering the body of a man involved with creating artificial intelligence bots, the team must figure out whether the victim’s own A.I. bot was programmed to kill him. In the meantime, Bones plans a special surprise for everyone for her 40th birthday.