Deep within the lush Tasmanian rainforest is the remote town of Vanishing Falls, a place with a storied past. The town's showpiece, built in the 1800s, is its Calendar House--currently occupied by Jack Lily, a prominent art collector and landowner; his wife, Celia; and their four daughters. The elaborate, eccentrically designed mansion houses one masterpiece and 52 rooms--and Celia Lily isn't in any of them. She has vanished without a trace. Joelle Smithton knows that a few folks in Vanishing Falls believe that she's simple-minded. It's true that Joelle's brain works a little differently--a legacy of shocking childhood trauma. But Joelle sees far more than most people realize, and remembers details that others cast away. For instance, she knows that Celia's husband, Jack, has connections to unsavory local characters whom he's desperate to keep hidden. He's not the only one in town with something to conceal. Even Joelle's own husband, Brian, a butcher, is acting suspiciously. While the police flounder, unable to find Celia, Joelle is gradually parsing the truth from the gossip she hears and from the simple gestures and statements that can unwittingly reveal so much. Just as the water from the falls disappears into the ground, gushing away through subterranean creeks, the secrets in Vanishing Falls are pulsing through the town, about to converge. And when they do, Joelle must summon the courage to reveal what really happened to Celia, even if it means exposing her own past.