Set on a hospital ship in Norwegian waters, with a British Merchant Navy crew and a collection of doctors, nurses and orderlies, hunted by German planes and U-boats and not knowing the reason for the pursuit, a saboteur loose, wreaking havoc with the electrical systems, fuel lines, heating and medical supplies.

As soon as I began to read I was hooked. This is a World War II adventure thriller that had me jumping from one crew member to another looking for the bad hat, and being proved wrong, usually when another act of sabotage took place. I wasn’t alone, even the main characters were baffled.

The feeling of suspense was masterly, and the description of a badly damaged ship in hostile weather conditions was enough to have me shivering for real. But to my mind the dialogue between the characters coupled with the understated humour in the face of the towering odds against them is what turned the whole story into a masterpiece. ( )