Swiss-American police officer Agnes Luthi is on leave in Lausanne, Switzerland, recovering from injuries she sustained in her last case, when an old colleague invites her to the world's premier watch and jewelry trade show at the grand Messe Basel Exhibition Hall. Little does Agnes know, another friend of hers, Julien Vallatton, is at the same trade show - and he's looking for Agnes. Julien Vallatton was friends with Guy Chavanon, a master of one of Switzerland's oldest arts: watchmaking. Chavanon died a week ago, and his daughter doesn't believe his death was accidental. Shortly before he died, Chavanon boasted that he'd discovered a new technique that would revolutionise the watchmaking industry, and she believes he may have been killed for it. Reluctantly, Agnes agrees to investigate his death. But the world of Swiss watchmaking is guarded and secretive, and before she realises it, Agnes maybe walking straight into the path of a killer.