As the balance of the war slowly shifts in Britain\'s favour, Lieutenant-Commander Steven Marshall brings his battle-scarred submarine into home port. ..
For his new command is secret and extremely hazardous - a captured German U-boat .
Marshall must return to the Mediterranean, but this time to a very different kind of war.
As the balance of the war slowly shifts in Britain\'s favour, Lieutenant-Commander Steven Marshall brings his battle-scarred submarine into home port