On Halloween, Mulder and Scully investigate the death of a corporate executive who may have been murdered by a thinking computer.
As the circumstances surrounding Olivia intensify, the Fringe team investigates a perplexing case involving genetic mutation.
A brilliant inventor who murdered a man who stole credit for his work, is double crossed by the other inmates in jail when they discover his "small friends" -- microscopic machines --can seve just about any purpose…including jailbreak.