An astronaut gets infected with alien DNA during the first mission on Mars and runs amok on earth. Preston and Laura team up with a peaceful, genetically re-engineered Sil to track the monster down.

[At a brothel, the scene of a grisly death]
Press Lenox: You get a look at the guy?
Seedy Motel Clerk: Hey, man, I don't pay attention to the Johns, alright? They come and they go.
[Starts laughing hysterically]
Seedy Motel Clerk: Heh heh, "They come and they go", get it?
Press Lenox: Yeah, hilarious.
[Press then sends the obnoxious wheelchair-bound clerk rolling down a nearby hill]
Patrick Ross: Eve.
Eve: Patrick.
[Arriving at the debutante's motel room, Patrick finds that she is not there alone]
Debutante: This is my sister. We share everything.
[Patrick smirks and steps in to the room, closing the door behind him]
[Press, Baker, and Gamble stare at the alien cocoons]
Dr. Laura Baker: Jesus Christ!
Press Lenox: Welcome to the Maternity Ward... from HELL.
Dr. Laura Baker: Patrick's offspring.
Press Lenox: I'm gonna go here and see if I can take a look.
Dr. Laura Baker: Press, it's not Eve's fault. She's also human too.
Press Lenox: Like them.
Darlene: My God, it's you! Will you sign my Space Flakes box?
Patrick Ross: What the fuck you laughing at, bitch?
[Patrick and the debutante have just finished having sex. The debutante's sister walks over to the bed and begins to undress]
Debutante's Sister: My turn!
Patrick Ross: Yes, it is!
[the debutante's sister lays down on the bed with Patrick and they immediately begin to have sex]
Debutante's Sister: [facetiously] Forget safe sex... You're dangerous!
Dr. Laura Baker: The alien DNA infected us, it's about time we infected them.