Of course the main attraction here is still the movie, but Secret Cinema wants to enhance those screenings wherever possible. For instance, once the film's over, attendees can make their way to an after-party inspired by the Enchantment Under the Sea prom that brought Marty McFly's parents together. Musical acts will square off in a Battle of the Bands each day to determine who performs on the prom stage. As you might guess, the Secret Cinema event has Back to the Future fans buzzing, and the company has at times been overwhelmed by ticket demand; 50,000 people tried to secure their seat in a single morning. And that's with adult tickets priced at £55.65 (around $93). The first showing is scheduled for July 24th. Londoners will also be able to see Back to the Future performed as a musical next year.