Regularly cited as one of the most chilling ghost stories ever committed to celluloid, The Changeling makes its long-awaited UK Blu-ray debut on August 13. Based on a 4K restoration, Second Sight's Limited Edition Blu-ray also packs in a host of newly created extras, plus a booklet, poster and the CD soundtrack – and we've got three copies to give away! To be in with the chance of winning one, simply answer the following question correctly...