Key Zest food critic Hayley Snow and her groom, police detective Nathan Bransford, chose Scotland for their long-delayed honeymoon, hoping to sightsee and enjoy some prize-winning scones. But things don't quite go to plan when the happy couple watch in horror as a mysterious tourist is pushed to his death from the famous Falkirk Wheel, high above the Forth & Clyde canal. Far away from home, surrounded by unfamiliar faces, eccentric characters, and a forbiddingly gorgeous setting, Hayley must call on all her savvy to keep the killer from striking again...