Is it possible for a heart-transplant patient to develop the phobias of the donor?

That is the question plaguing Richard Paynter who makes for the Lakes in a desperate attempt to overcome the obsessive fear of water that came with his new heart. Instead, he finds love with wealthy widow and businesswoman, Liberty Westerman - and a watery grave.

It is left to Liberty to overcome her own fears in order to discover just how much Richard's transplant - and the Lakes - contributed to his death.

Murder and Miscalculation is the fourth in a series of murder mysteries set in the English Lake District.