No good deed goes unpunished. Lord Phillip Westcombe is a younger son and sufficiently independent. He has no need upset his tidy life with the messiness of love, but when he comes to the rescue of the lovely Lady Elizabeth Follett, and the two are found in a compromising position, his life takes an unexpected turn. Barely knowing each other, they are forced to wed.

Embarking on a new life they must learn to trust God as they face an evil which threatens their lives and the security of the British Empire. Will the minions of the Black Diamond—the bounder who owns the soul of Elizabeth's father—succeed in their evil plans? Will Phillip and Elizabeth's new love and faith survive the test that awaits them? Or will they all fall to the Black Diamond?