On their honeymoon trip through Europe, Prudence and Knighton join a small group of travelers to see the triple falls on the river Velino in Italy when tragedy strikes. Their carriage breaks down on a remote road, they are accosted by bandits, and escape only to find one of the travelers dead the next morning in a ravine near the bandits' ambush location. The mystery deepens when they discover the victim is wearing another traveler's cloak. To make...