In the sixth golden retriever mystery, Dog Have Mercy, Christmas approaches and reformed hacker Steve Levitan tries to help a fellow ex-con now working at the vet's office in Stewart's Crossing. His curiosity, and the crime-solving instincts of his golden retriever, Rochester, kick in when liquid potassium ampoules are stolen from the vet and Steve's new friend is a suspect.
Is this theft connected to a drug-running operation in North Philly?...