The Custodians - Jacalyn S. Burke

Creepy thriller set in SW France. When holiday-makers Catherine and Tom Grayston disappear in Rousinac, two detectives David Frankel and James Harrison set off to find out what happened. There's friction from the get-go. David's methodical approach clashes with James's eccentric intuition, but their skills eventually combine as things get weirder. The duo dig into the town's hidden past, but a supernatural presence dogs their every move. Soon, a conspiracy emerges from Rousinac's underground tunnels dating back to WW2. A tight-lipped community stands in the way of truth. How far down the rabbit hole will the detectives have to go before they lose their sanity or even worse? The Custodians is a dark psychological thriller, a page-turner with twisting timelines. Rousinac's dark secret will keep you on the edge of your seat