The Witcher’s Freya Allan is set to star in an upcoming horror movie titled Baghead.She will be joined in the film by Bridgerton’s Ruby Barker and Peter Mullan of Trainspotting and Ozark fame.Fan reactions to the trailer have been mixed, with some praising the casting of Allan while others believe the movie looks ‘predictable and tiresome.’The horror genre has a habit of being able to attract big-name stars to appear in relatively low-budget affairs and that appears to be the case in StudioCanal’s latest effort, Baghead, which boasts actors from The Witcher, Bridgerton and Ozark among its main…