The Mark of the Monkey
First appearing in Britannia & Eve in the UK and soon after in Colliers in the US, this is largely a rewrite of The Blue Monkey but with East being identified as Nayland Smith. Smith and Petrie are vacationing in Dartmoor when a young woman asks them to help find her missing dog. They go in search of the canine only to discover its body and later the body of the woman's father. That throws them into a mystery.