Abigail Baskin never thought she'd fall in love with a millionaire. Then she met Bruce Lamb. He's a good guy, stable, level-headed, kind—a refreshing twist from her previous relationships. But right before the wedding, Abigail has a moment of uncertainty. The drunken one-night stand from her bachelorette weekend, the sexy guy who wouldn't give her his real name, didn't really mean anything, she keeps telling herself. She puts the incident out of her mind. Then the mysterious stranger suddenly appears—and Abigail's future life and happiness are turned upside down.

On a flight from London to Boston, Ted Severson meets the stunning and mysterious Lily Kintner. Sharing one too many martinis, the strangers begin to play a game of truth, revealing intimate details about themselves. Ted talks about his marriage that’s going stale and his wife, Miranda, who he’s sure is cheating on him. Ted and his wife were a mismatch from the start - he the rich businessman, she the artistic free spirit - a contrast that once inflamed their passion but has now become a cliché. But their game turns a little darker when Ted jokes that he could kill Miranda....

Hen and her husband, Lloyd, have settled into a quiet life in a new house outside of Boston, Massachusetts. Hen (short for Henrietta) is an illustrator and works out of a studio nearby and has found the right meds to control her bipolar disorder. Finally, she’s found some stability and peace. But when they meet the neighbors next door, that calm begins to erode as she spots a familiar object displayed on the husband’s office shelf. The sports trophy looks exactly like one that went missing from the home of a young man who was killed two years ago.

Nine strangers receive a list with their names on it in the mail. Nothing else, just a list of names on a single sheet of paper. None of the nine people know or have ever met the others on the list. They dismiss it as junk mail, a fluke—until very, very bad things begin happening to people on the list. First, a well-liked old man is drowned on a beach in the small town of Kennewick, Maine. Then, a father is shot in the back while running through his quiet neighborhood in suburban Massachusetts. A frightening pattern is emerging, but what do these nine people have in common?

Growing up, Kate Priddy was always a bit neurotic, experiencing momentary bouts of anxiety that exploded into full-blown panic attacks after an ex-boyfriend kidnapped her and nearly ended her life. When Corbin Dell, a distant cousin in Boston, suggests the two temporarily swap apartments, Kate, an art student in London, agrees, hoping that time away in a new place will help her overcome the recent wreckage of her life. But soon after her arrival at Corbin's grand apartment on Beacon Hill, Kate makes a shocking discovery.