During World War I, the British navy disguised some of its warships as civilian cargo ships, known as Q Ships, in order to fool the Germans. German U-boat commander Capt. Von Haag spots one of these ships, commanded by Adm. Sims, in the English Channel and begins tracking it, leading to a war of nerves between Von Haag and Sims.
| Directing | Michael Barringer | Director |
| Directing | Geoffrey Barkas | Director |
| Writing | Michael Barringer | Writer |