Larry Marley to come to fruition, he joined the blanket protest in the Maze's H-Blocks for four years. In September 1983, he helped Brendan McFarlane, Bobby Storey and Gerry Kelly to orchestrate the successful mass escape of 38 republican prisoners from the Maze. It was the largest prison escape in British penal history. According to a BBC documentary about the escape, Marley was the mastermind, having come up with the idea with the aim of embarrassing British Prime Minister Margaret Thatcher, as the Maze was considered to be one of the world's most secure prisons. Marley, unlike his three co-conspirators, did not
Mountjoy Prison helicopter escape observed already, as other Ministers are wont to use State cars. The IRA released a statement on the escape, which read, "Three republican prisoners were rescued by a special unit from Mountjoy Prison on Wednesday. The operation was a complete success and the men are now safe, despite a massive hunt by Free State forces". Shortly after the escape Twomey gave an exclusive interview to German magazine "Der Spiegel", where the reporter said people throughout Europe were joking about the incident as "the escape of the century". Irish rebel band the Wolfe Tones wrote a song celebrating the escape called