It seemed like a simple case: the murder of Lewis Trenton, a beachcomber who lived alone in a cabin in the Oregon hills. But the newspaper article piques the interest of Vivian Wainwright, owner of the British-style Misty Bay Tearoom. The photo accompanying the article shows Lewis's cluttered living room and on the shelf is a replica of Big Ben. Vivian is sure she sold the clock a week before in her shop. Who could have given the replica to Lewis? Unable to keep from doing a bit of sleuthing, Vivian hunts down the replica in a local thrift shop, noticing that the base is missing, rendering it worthless, but just as she's about to throw it in the trash, a sparkle catches her eye. It's a diamond, hidden away in a crevice in the clock. Vivian takes the diamond to Detective Tony Messina, who identifies it as part of a jewelry heist in Portland a month earlier. Portland police think Lewis was the fence who sold the jewels and that he was killed after double-crossing the thieves—but Messina doesn't believe the story. What was the true motive behind Lewis's murder? How did he come upon the diamond? And what secrets can the clock tell—before the killer strikes again?