When a lobster fisherman discovers a dead body in Scotland's Firth of Forth, Karen is called into investigate. She quickly discovers that the case will require untangling a complicated web - including a historic disappearance, art forgery, and secret identities - that seems to orbit around a painting copyist who can mimic anyone from Holbein to Hockney.

Meanwhile, a traffic crash leads to the discovery of a skeleton in a suburban garage.

Needless to say, Karen has her plate full. Meanwhile, the man responsible for the death of the love of her life is being released from prison, reopening old wounds just as she was getting back on her feet.