Lake Bell has pulled out of Scream 4 just days before the start of filming leaving movie bosses scrambling to find a replacement.
The It's Complicated star was due to play a police officer in the upcoming fourth instalment of Wes Craven's horror series, which sees Neve Campbell, David Arquette and Courteney Cox reprise their roles, alongside new talent including Emma Roberts and Hayden Panettiere.
Bell has now been forced to quit her role due to scheduling conflicts and producers are desperately searching for a new actress to take over.
She announced the news in a post on her Twitter.com page, telling fans, "Sucks: Scheduling conflicts with my current gig means I can't do Scream 4!" and teased fans of the franchise by adding, "Hey horror bloggers, I know who the killer is..."
It's already been a busy year for the actress as she enjoyed box office success with It's Complicated before lending her voice to animation smash Shrek Forever After.
She is set to star in Burning Palms as well as mixing movie and TV work with Children's Hospital and How To Make It In America.
Scream 4 is due for release in April 2011.