Four cases. Four killers. Only one man can stop them.
In London.
The Metropolitan Police set up a cold case squad to catch the criminals nobody else can.
In Geneva.
Millionaire art collector Miles Faulkner was pronounced dead two months ago. So why is his unscrupulous lawyer still representing a dead client?
On a luxury liner en route to New York.
The battle for power within a wealthy dynasty is about to turn to murder.
And at heart of each investigation is Detective Chief Inspector William Warwick, together with ex-undercover operative Ross Hogan, brought in from the cold.
But can they catch the killers before it’s too late?
