Bayonets Along the Border by John Wilcox
North West India, 1897. Simon and Alice Fonthill are travelling with their old friend Jenkins to Marden, India for an anniversary party with the Guides Corps. But when they are ambushed on their journey, they realise that the land may not be as peaceful as they first believed. Their suspicions are confirmed when they are told of fresh trouble from the Pathans and Simon is tasked by Viceroy Elgin to deliver a very important letter to the Amir in Kabul. With Simon in Kabul, the Pathans attack the Pass and Alice is kidnapped by the Mullah leading the revolt, so Simon must battle against time and incredible odds to rescue his wife.