Cambridge is sweltering, during an unusually hot summer. To Jackson Brodie, former police inspector turned private investigator, the world consists of one accounting sheet--"lost" on the left, "found" on the right--and the two never seem to balance. Jackson has never felt at home in Cambridge and has a failed marriage to prove it.

For half a lifetime, journalist Martin Scarsden has run from his past. But now there is no escaping. He'd vowed never to return to his hometown, Port Silver, and its traumatic memories. But now his new partner, Mandy Blonde, has inherited an old house in the seaside town, and Martin knows their chance of a new life together won't come again. Martin arrives to find his best friend from school days brutally murdered and Mandy the chief suspect. With the police curiously reluctant to pursue other suspects, Martin goes searching for the killer. And finds the past waiting for him. 

Nat, a 47-year-old veteran of Britain's Secret Intelligence Service, believes his years as an agent runner are over. He is back in London with his wife, the long-suffering Prue. But with the growing threat from Moscow Centre, the office has one more job for him. Nat is to take over The Haven, a defunct substation of London General with a rag-tag band of spies. The only bright light on the team is young Florence, who has her eye on Russia Department and a Ukrainian oligarch with a finger in the Russia pie.  

An artist inherits 100 years of photographic portraits, all of the same doomed American chestnut. A hard-partying undergraduate in the late 1980s electrocutes herself, dies and is sent back into life by creatures of air and light. A hearing and speech-impaired scientist discovers that trees are communicating with one another. An Air Force crew member in the Vietnam War is shot out of the sky, then saved by falling into a banyan.

For years, rumors of the 'Marsh Girl' have haunted Barkley Cove, a quiet town on the North Carolina coast. So in late 1969, when handsome Chase Andrews is found dead, the locals immediately suspect Kya Clark, the so-called Marsh Girl. But Kya is not what they say. Sensitive and intelligent, she has survived for years alone in the marsh that she calls home, finding friends in the gulls and lessons in the sand. Then the time comes when she yearns to be touched and loved. When two young men from town become intrigued by her wild beauty, Kya opens herself to a new life - until the unthinkable happens.