During the murder investigation of three identical doctors Mulder makes a stunning discovery regarding his missing sister and Scully's life is threatened by a shape-shifting bounty hunter.
As a Native American mystic attempts to heal Mulder, Scully pursues secret files on alien experimentation and unwittingly becomes a killer's target.
To save his dying mother, Mulder must protect the extraterrestrial healer, Jeremiah Smith, from a ruthless alien bounty hunter.
Seemingly prophetic dreams send Mulder on a search for the undiscovered victims of a serial killer, only to discover that one of them may be his missing sister, Samantha.
Covered in blood and suffering from amnesia, Mulder pieces together the events of the last few days, but the trail leads to a double murder that appears to have been committed with Mulder's weapon.
