Now that her children are grown, her lout of an ex-husband is gone, and her herbal remedy business has taken off, Cass Shipton is free to enjoy the simple comforts of her grown-up life. There's her cozy Cape Cod home overlooking Plymouth Harbor, her scruffy, disdainful pooch, and the solid bond she shares with four other ordinary women who get together to sip tea, trade stories, everyday Wiccans who work at the local library, carpool the kids, and run the vitamin store in the mall. But Cass's idyllic, small-town life changes after she bumps carts at the local supermarket with a stranger in a green cap. Beneath the man's cheery smile and twinkling eyes, Cass senses something sinister...a foreboding that leads her to the haunting case of a missing boy. Certain that something must be done, Cass turns to her inner circle of friends to help her find the truth, no matter where it leads. When another boy disappears, the circle of five embarks on a dangerous undertaking that will call upon all their powers and test the bonds of friendship as never before...