As part of the Sci-Fi-London OktoberFest, The Royal Observatory in Greenwich put on a super special event investigation all things extra-terrestrial. There were masked mutants at every entrance, an alien adventure game and a tour of space from the amazing planetarium. Plus, a special screening of Gareth Edward’s low budget, sci-fi film Monsters finished off the universal evening. Nice.

There’s nothing more heartbreaking than finding out your favourite thrill-flick is based on a load of tosh, so here at Best For Film we have the solution! We count down the Top 5 “based on a true story” films, relishing the truth (and the maybe not so much truth) behind the stories that make us shiver! Dare you join us?