her to a rooftop, where they mortally wound her in a gun battle. As Brenda dies, Gallagher points a strangely-shaped, alien weapon at her; however, she leaps from the roof. As Masterson arrives from his house to take charge of the scene, the alien transfers itself from Brenda's dying body to Masterson's dog. Frustrated by Gallagher's continuing refusal to explain the strange phenomenon of ordinary citizens turning into crazed killers, Beck arrests him and puts him in a jail cell. Beck soon learns that "Gallagher" is an imposter, impersonating the real agent Gallagher, who is dead. When Beck confronts "Gallagher" with this information, "Gallagher" admits to being an extraterrestrial lawman and that they are in fact pursuing an alien thrill killer who has the ability to take over other's bodies. Beck dismisses the story as insane and leaves "Gallagher" in a jail cell at the police station. Back at Masterson's house, the alien leaves the dog's body and enters Masterson. In the morning, Masterson goes to the police station and seizes a number of weapons, sparking a shootout between himself and the station's police officers as he attempts to track down "Gallagher". Convinced of "Gallagher's" story due to Masterson's immunity to excessive bullet wounds, Beck releases him from jail, and the two confront Masterson. During the resulting shootout, Masterson confirms that "Gallagher" is an alien law enforcer named Alhague who has been pursuing the alien ever since it murdered his family and his partner on another planet. When Alhague first came to Earth, he inhabited the body of Robert Stone, a park ranger, then assumed the identity of Lloyd Gallagher after the real Gallagher was killed in a fire. Though Beck manages to stop Masterson, Alhague/Gallagher reveals that his weapon cannot kill the alien when it is inside a human body; the weapon does not work on human skin, thus requiring him to be present when it is transferring hosts. They are unable to stop the alien from abandoning Masterson's body for that of Beck's partner Willis, who then escapes the station. Using Willis' credentials, the alien tries to gain access to Senator Holt (John McCann), a likely presidential candidate. Alhague/Gallagher and Beck follow Willis, and a shootout ensues between Beck and Willis. Beck is severely wounded. As Willis, the alien corners Senator Holt and enters his body before Alhague/Gallagher can stop him. "Holt" then calls a press conference and