who was the killer in scream 2 movie
Scream 2 Sidney goes back to the campus and finds Derek in the auditorium tied to a crucifix, his mouth gagged with duct tape. Once Sidney unties him, she is confronted by Ghostface, who reveals himself as Mickey and kills Derek. Mickey details his plan to become famous in the ensuing trial and media spectacle. He then announces his real partner, Debbie Salt, who arrives holding Gale at gunpoint. Sidney discovers that Debbie Salt is actually Billy Loomis' mother, seeking revenge for her son's death. Mickey explains that they met online and that Mrs. Loomis agreed to pay for Mickey's tuition fee while Mickey does the actual killing. Mrs. Loomis betrays Mickey and shoots him, as she plans to blame the murders on Mickey. Before he collapses, Mickey accidentally shoots Gale, causing her to fall off the stage.
Ghostface (Scream) In the original Scream, the identity is used by a killer stalking the fictional town of Woodsboro, California. After the murder spree begins, Sidney Prescott (Neve Campbell) begins receiving taunting and threatening phone calls from Ghostface, who claims knowledge of her mother Maureen Prescott (Lynn McRee)'s brutal murder, one year prior to the events of the film, a murder that was blamed on Cotton Weary (Liev Schreiber). The Ghostface disguise allows suspicion to fall on many people, including Sidney's boyfriend, Billy Loomis (Skeet Ulrich), her father, Neil Prescott (Lawrence Hecht), her friend, Randy Meeks (Jamie Kennedy), and her schoolmate, Stu Macher (Matthew Lillard). Ghostface is revealed in the finale as both Billy and Stu, who reveal that they murdered Sidney's mother and framed Cotton. Billy cites his motivation as abandonment by his mother (Laurie Metcalf), brought about by his father's affair with Maureen, while Stu cites "peer pressure". Sidney is able to gain an advantage against Billy and Stu, temporarily adopting the Ghostface persona herself to taunt them before killing Stu. Gale Weathers (Courteney Cox) shoots Billy to stop him from killing Sidney, who then finishes Billy off with a bullet to the head, citing the fact that "They ALWAYS get back up," a common horror cliche, and now her catchphrase. This is most likely one of the many tropes taught to her by Randy Meeks, who is obsessed with horror, and openly lists these cliches earlier in the film, during a party.