Mulder and Scully investigate a report that some Army test pilots are disappearing after completing their missions.
Mulder reluctantly accepts a new partner, Agent Alex Krycek, and they investigate the deaths of several Green Beret soldiers who participated in a sleep deprivation experiment during the Vietnam War.
Scully and Mulder's situation becomes increasingly dangerous when a mysterious government stranger enters the picture.
When Lex's Level 33.1 project comes to fruition, Oliver Queen must bring together several of Clark's "heroic" super-powered allies together: Arthur Curry, Bart Allen, and Victor Stone.
Mulder and Scully (David Duchovny, Gillian Anderson) probe a series of murders in which each victim had been warned by the dead.