Having been invited to spend Christmas in the country, fishing for pike, Gently finds himself hunting a completely different predator when a guest at Merely Hall, a nearby stately home, is found dead at the foot of the grand staircase on Christmas morning. At first the tragedy is assumed to be a simple accident, but Gently is not one to jump to conclusions and is soon in no doubt whatsoever that this was murder. Merely produces the finest tapestries in England but the threads that Gently must unravel in his investigation are more complex than any weaver's design, with everyone from the lord of the manor to his most lowly servant falling under suspicion.