IFI HORRORTHON: NIGHTMARE FACTORY Director: DONNA DAVIES 90 minutes, Canada, 2011, Colour Book cinema tickets Gore fans will not want to miss this documentary on legendary effects group KNB EFX, whose work includes Day of the Dead and The Walking Dead. Showing as part of IFI Horrorthon 2012 (October 25th – 29th). Director: DONNA DAVIES 90 minutes, Canada, 2011, Colour