Lemon Lister's dog, Milo, has a bad habit of finding dead things. Which is why Detective Zahn enlists his help to find a missing San Francisco police officer. And Milo doesn't disappoint. Unfortunately, the corpse Milo finds in Golden Gate Park belongs to Lemon's girlfriend-Jade's- ex. Now Jade is in jail on suspicion of murder. Lemon and the unstoppable Basset Hound with his discerning nose must find the real killer and exonerate Jade.