Cassia and Stanley are ordered to visit Brimstone Mountains to check on the residents and to make sure they are all getting along. It’s here that they meet a friendly yeti called Leonard who lives in a cave at the bottom of the mountains. He’s a gentle soul and Cassia and Stanley immediately warm to him.
The Brimstone Mountain Festival is taking place and Cassia is asked to judge the competitions. There’s a joyful atmosphere and it’s obvious the residents are a happy bunch who get along well. All thoughts of her recent murder investigations are pushed to the back of Cassia’s mind as she enjoys the festivities.
Until something dreadful happens.
When the Festival is over, Cassia and Stanley return to Leonard’s cave to bring him gifts from the festival. They are shocked to find his dead body lying on his stone bed. Leonard was a kind soul who never upset anyone, so who would commit such a terrible crime? Cassia and Stanley are determined to find the culprit.