Patterson began using the pseudonym Jack Higgins during the late 1960s; his first minor bestsellers were published during the early 1970s, two contemporary thrillers The Savage Day and A Prayer for the Dying, but it was the publication of his thirty-sixth book, The Eagle Has Landed, in 1975, that made Higgins' reputation. Its plot concerns a German commando unit sent into England to kidnap Winston Churchill, and is reminiscent of Alberto Cavalcanti's wartime movie Went the Day Well?, which itself was based on the 1942 Graham Greene short story "The Lieutenant Died Last". The main character is arguably an Irish gunman and poet, Liam Devlin. Higgins followed The Eagle Has Landed with a series of thrillers, including several (Touch The Devil, Confessional, The Eagle Has Flown) featuring the character Devlin.