Don Thompson

Mulder faces his feelings about the disappearance of his sister after a girl in Iowa mysteriously vanishes.

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.

As Clark comes ever closer to making his first discovery about his origins, a tornado approaches Smallville. Meanwhile, a reporter hired by Lex is about to discover Clark's superhuman abilities.

When Chloe accidentally inhales a mysterious krypto-gas, she discovers it acts as a truth serum to anyone who comes in contact with her and decides to take advantage of her new power by going to the Kents to find out Clark's secret. However, her new power comes with fatal consequences and Clark must find an antidote before she discovers the truth about him or worse, dies.

After a suicide attempt and multiple murders at a military hospital, Mulder and Scully meet a quadruple amputee who has gained the power of astral projection, and takes out his personal frustrations on his commanding officers.