The Purge, starring Ethan Hawke and Lena Headey, is set in a near future in which all crime is legal for one night. When the Sandin family allow a fugitive to take refuge in their home, they find themselves under attack. The Purge is available on Blu-ray and DVD on 21 October.
You read our review of The Purge here, and you can buy The Purge on Blu-ray for £15 at Amazon.co.uk.