It was the perfect day for a coach tour until a band of thugs blocked the road and robbed the passengers. It's a tough case to solve, but luckily the intrepid Miss Seeton, a retired art teacher, and a passenger on the ill-fated tour, steps in with her sketches of the bandits. But when she returns to her tranquil village, she brings trouble along. Now suspicion, malice and murder are right in her backyard.