For Isobel Drake a chance meeting with old friend Anne Fellows leads to an invitation to attend Fellows Hall, Anne's family home, for a weekend when her parents are hosting a reunion of army officers. When the body of one of the guests is found, apparently having committed suicide, Isobel is thrown into a role that at the time seems simple enough, but as the body of a second victim is discovered it becomes apparent that a killer is on the loose. Isobel must uncover details of secrets held since before the war if she is to find the identity of the killer and prevent yet more deaths.

It's November 1949 and Isobel Drake is back in Little Hilton. With the help of her good friend Anne Fellows she has embarked on a career as a private detective and soon finds herself investigating a robbery at the home of her first client Mr Andrew Taylor. This being an Isobel Drake mystery, the crime doesn't remain that of robbery and before long both Isobel and Anne are once more on the trail of a killer.