- Script
- Lee Falk
- Pencils
- Fred Fredericks
- Inks
- Fred Fredericks
- Colors
- ?
- Letters
- ?
- Characters
- Mandrake; Lothar
Titre original: "The Mystery" (1970)
- Script
- Roy Williams
- Pencils
- Manuel Gonzales
- Inks
- Manuel Gonzales
- Colors
- ?
- Letters
- ?
- Genre
- humour (humor); animaux anthropomorphes drôles (anthropomorphic-funny animals)
- Characters
- Mickey Mouse ; Alvin; Jojo [Morty Fieldmouse]; Michou [Ferdie Fieldmouse]
Sunday page du 2 octobre 1966.