Felix Pink is retired. Widowed for more than a decade and a painfully literal thinker, he has led a life of routine. He occupies himself volunteering as an Exiteer - someone who sits with terminally ill people as they die by suicide, assisting with logistics and lending moral support. When Felix lets himself into Number 3 Black Lane, he’s there to keep a dying man company as he takes his final breath. But just 15 minutes later, Felix is on the run from the police. Now he must discover whether what went wrong was a simple mistake - or deliberate, a murder.

In the early hours of a summer morning, a young woman steps into the path of an oncoming bus. A tragic accident? Or suicide? At the center of this puzzle is Adrian Wolfe, a successful architect and grief-stricken widower, who, a year after his third wife's death, begins to investigate the cause. As Adrian looks back on their brief but seemingly happy marriage, disturbing secrets begin to surface. The divorces from his two previous wives had been amicable, or so it seemed; his children, all five of them, were resilient as ever, or so he thought.

The day Anna McDonald's quiet, respectable life explodes starts off like all the days before: Packing up the kids for school, making breakfast, listening to yet another true crime podcast. Then her husband comes downstairs with an announcement, and Anna is suddenly, shockingly alone. Reeling, desperate for distraction, Anna returns to the podcast. Other people's problems are much better than one's own - a sunken yacht, a murdered family, a hint of international conspiracy. But this case actually is Anna's problem. She knows one of the victims from an earlier life.

Northern Ireland, spring 1981. Hunger strikes, riots, power cuts, a homophobic serial killer with a penchant for opera, and a young woman’s suicide that may yet turn out to be murder: on the surface, the events are unconnected, but then things—and people—aren’t always what they seem. Detective Sergeant Duffy is the man tasked with trying to get to the bottom of it all. It’s no easy job—especially when it turns out that one of the victims was involved in the IRA but was last seen discussing business with someone from the loyalist Ulster Volunteer Force.

In 1967, during the time of peace, free love, and hitchhiking, 19-year-old Mary Terese Fleszar was last seen walking home to her apartment in Ypsilanti, Michigan. One month later, her naked body stabbed over 30 times and missing both feet and a forearm was discovered on an abandoned farm. A year later, the body of 20-year-old Joan Schell was found, similarly violated. Over the next two years, five more bodies of female students were uncovered around the area.