Our Kind of Traitor (2016)

When a couple from Oxford decides to take a holiday in Antigua, they don?t expect to get lured into a web of intrigue and international secrecy, but that?s exactly what happens. The duo meet a Russian millionaire, also on holiday, who invites them for a game of tennis. That game of tennis turns out to be a prelude to a much larger request involving his defection from Russia, placing the couple squarely between British government agencies and Russian organized crime without knowing whom they can turn to for help.