Luke Evans, Olivia Wilde, Armie Hammer, Cillian Murphy and Michael Smiley have signed on to star in Free Fire, the latest from British filmmaker Ben Wheatley (Sightseers, A Field in England).The story is set in 1978 Boston, following a woman named Justine (Olivia Wilde) who has set up a meeting between two Irishmen (Cillian Murphy and Michael Smiley) and a gang lead by Luke Evans and Armie Hammer for an arms deal.