Overview
Witch Hunt is a 1993 crime novel by Ian Rankin, under the pseudonym "Jack Harvey". It is the first novel he wrote under this name.
Plot summary
A fishing boat sinks in the English Channel in the middle of the night, and the evidence points to murder. Ex-MI5 operative Dominic Elder comes out of retirement to help investigate the explosion of the boat, as it appears that his long-time obsession, a female assassin known as "Witch", may be responsible. Using the boat to get to England from France, Witch left a subtle trail of clues to announce her arrival and to warn off Elder.
But that is the least of Special Branch's worries, if Elder's well-honed intuition is correct. He has seen her work before and knows her to be a resourceful enemy, who always seems a step ahead of the authorities. With an imminent summit of world leaders to be held in London, Witch's target seems obvious.
From Wikipedia (CC BY-SA 4.0).