Jill Roberts is the main antagonist in Scream 4.
Biography[]
The Second Woodsboro Murders, the bloodiest Ghostface atrocity that also caused the most deaths, were planned and carried out by Jill. She was the offspring of Kate Roberts, Maureen's younger sister. She hated the constant fuss people made about her estranged celebrity cousin Sidney Prescott, who was the star of the original Stab trilogy, and who had grown up in Woodsboro, California. Jill was a phony protagonist, with advertisements stating she would be the new Sidney-esque heroine for a new generation. She was, in fact, the brains behind the anniversary killings. With the idea that she would be a modern Sidney and he would be a millennial Randy, Jill's partner Charlie served as virtually solely the muscle for the operation.
High school girls Jenny Randall and Marnie Cooper are killed by Ghostface in 2011, during the 15th anniversary week of the original Woodsboro murders. The next day, Sidney Prescott and Rebecca Walters, her publicist, return to Woodsboro to promote Sidney Prescott's book. Sidney is forced to remain in town while the murders are investigated after evidence is discovered in her rented car.
Ghostface makes a threatening phone call to Sidney's cousin Jill Roberts, who is dealing with the infidelity of her ex-boyfriend Trevor Sheldon, as well as to her friend Olivia Morris. Dewey Riley, who is now the town's sheriff, interrogates Jill and Olivia about their calls, along with their friend Kirby Reed, with the help of his deputies Judy Hicks, Anthony Perkins, and Hoss. Gale Weathers, Dewey's wife, decides to look into the killings over her husband's objections since she is having writing trouble. Sidney spends the night with Jill and her mother aunt Katie. One evening, as Jill and Kirby watch a horror movie from the opposite side of the street, Olivia is slain by Ghostface. Then Ghostface confronts Sidney herself, and they engage in combat until Perkins and Hoss show there and force Ghostface to depart.
After finding that Rebecca wanted to use the killings to boost book sales, Sidney dismisses her at the hospital. Ghostface then kills Rebecca in a parking garage. Gale enlists the aid of Charlie Walker and Robbie Mercer, two high school movie enthusiasts. Gale and Sidney predict that the murderer will most likely attack during the "Stabathon," a screening party held in a barn where teens congregate to binge watch all of the Stab franchise films. Charlie hypothesizes that the killer is according to the norms of horror remakes. Gale breaks into the gathering to look into it, but Ghostface stabs her in the shoulder. Also killed are Hoss and Perkins, the home guards for Jill. Before attacking Sidney and Kate and murdering Kate, Ghostface informs Sidney via another taunting call that Jill has departed for Kirby's.
At an after-party at Diddy’s house, Jill, Kirby, Charlie, Robbie, and Trevor are there when Robbie is killed by Ghostface, who struck when he was intoxicated. When Sidney comes to depart with Jill, Ghostface pursues them both. Kirby releases Charlie, who was chained and gagged, but he then stabs her, identifying himself as Ghostface, before leaving her to bleed to death. Sidney is then faced by Charlie and a second Ghostface, who identifies herself as Jill, while she searches for Jill and phones Dewey. She acknowledges planning the killings because she was envious of Sidney's renown for surviving earlier killing sprees and wanted to become famous as a fictitious victim of the killings, intending to frame Trevor as Ghostface. To ensure that she is the only survivor, Jill murders Trevor and betrays Charlie by stabbing him fatally in the heart. To further frame Trevor, she later stabs Sidney and dismembers herself.
When Sidney and Jill are being brought to the hospital, Dewey and the police show there. Jill rushes to her hospital room and attempts to kill Sidney one last time after learning that she has survived. Dewey, Gale, and Judy step in after being made aware of Jill's apparent knowledge of the precise location of Gale's stabbing.
Death[]

Jill's death
Sidney uses a defibrillator to render Jill unconscious before shooting her in the heart after she survives the defibrillator and attempts to murder her one more time. Outside she praised by reporters as a hero for surviving the attacks not yet knowing her true nature and death.
Victims[]
- Trevor Sheldon - Shot in the balls and head
- Charlie Walker - Died of a broken (stabbed) heart