Psycho Killer is a mission in Grand Theft Auto: Vice City given to protagonist Tommy Vercetti by rock band Love Fist from their recording studio in Downtown, Vice City. It is unlocked by the mission Love Juice.
Mission
Kent Paul and the Love Fist band informs Tommy that a psycho killer wants Love Fist dead. Tommy drives in the Love Fist limo to Rock City where Love Fist plans to have a signing in order to draw the psycho out. When Tommy arrives, the cross-dressing killer kills a security guard and blames Love Fist for ruining his life. The killer escapes in his Sentinel as Tommy pursues him. Tommy eventually "kills" the killer.
Script
(Inside the recording studio)
Kent Paul: Tommy, man. Am I glad to see you!
Tommy Vercetti: What's going on?
Jezz Torrent: Bad vibes, Tommy....
Percy: Aye, I'm not joking, it's heavy stuff man, heavy you know?
Jezz Torrent: There's this cat, we hardly know him, but he knows us. Like this cat. Knows all about us. Knows that Willy likes his ladies' underwear, eh! Or that Percy likes Duran Duran!
Percy: Shut up ye fool. Just 'cause Jezz bangs sheep. It's a love rocket thing, you know?
Willy: Oi shut it!
Jezz Torrent: Yeah, the love rocket thing, right. But listen, this cat...
Kent Paul: Yeh, yeh, the guy, he wants Love Fist dead. Dead Tommy. Love Fist gone. You know what they say, the good die young. But Tommy, you gotta save Love Fist!
Jezz Torrent: We got a signing in two hours and I think...
Kent Paul: And the boys think the stalker's gonna try some monkey business there.
(At Rock City) Psycho: I'll see Love Fist burn! Love Fist ruined my life!
Rewards
The reward for completing this mission is $4,000. The mission Alloy Wheels of Steel is unlocked.