Gertrude, Gumshoe: S'more MurderR.E. Merrill
Audiobooks narrated by Darlene Allen
- Gertrude, Gumshoe: Murder at the Thrift StoreR.E. Merrill
- Gertrude, Gumshoe: Slam Is MurderR.E. Merrill
- Introducing Gertrude, GumshoeR.E. Merrill
- Gertrude, Gumshoe and the VardSale VillainR.E. Merrill
- Gertrude, Gumshoe: Gunslinger CityR.E. Merrill
- Gertrude, Gumshoe and the Clearwater CurseR.E. Merrill
- Gertrude, Gumshoe Cozy Mystery Boxed Set: Books 1–3R.E. Merrill
- Gertrude, Gumshoe Cozy Mystery Boxed Set: Books 4–6: Books 4, 5, and 6R.E. Merrill
- Gertrude, Gumshoe: Haunted HotelR.E. Merrill
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