Cecil F. Ford

A young medical student visits the Blasket Islands, off the coast of Ireland, during the holidays and becomes charmed with the place and its people. He falls in love with a local girl, who is betrothed to a local man. The two men meet and become fast friends, and the student realizes the hopelessness in his love of the girl of his friend. He leaves but, after his graduation from Trinity College, he returns to cast his lot with these simple fishermen

When Norwegian resistance leader Lieutenant Erik Bergman reports the location of a German V-2 rocket fuel plant, the Royal Air Force's 633 Squadron is assigned the mission to destroy it. The plant is in a seemingly-impregnable location beneath an overhanging cliff at the end of a long, narrow fjord lined with anti-aircraft guns. The only way to destroy the plant is by collapsing the cliff on top of it.