Retired and widowed for more than a decade, Felix Pink volunteers as an Exiteer: someone who sits with terminally ill people as they die by suicide, then removes the evidence. When Felix lets himself in to Number 3 Black Lane, he's there to perform an act of charity. But just 15 minutes later, after a tragic error, Felix is on the run from the police. Now he's desperate to find out what went wrong, and if his simple mistake was in fact a deliberate murder.