21 books • 3 series
Der Detektive Bist Du!
Der Detektive Bist Du! 40 Neue Ratekrimis
Elliott's Talking Dog
Quien Lo Hizo?
Elliott Finds a Clue
Secret Club House Game Book
Kids' Bathroom Whodunits
The Who, What & Where Book of Brain Bafflers
Giant Book of Pencil Puzzles
Little Giant Book of Mini-Mysteries (Little Giant Books)
Wicked Whodunits
Crime Scene Whodunits
Jeff Quicksolve Adventures
Dr. Quicksolve Mysteries
Giant Book of Puzzles (Giant book of)
Clever Quicksolve Whodunit Puzzles
Quien Es Culpable?
Great Quicksolve Whodunit Puzzles
Baffling Whodunit Puzzles
Challenging Whodunit Puzzles (Dr Quicksolve's mini-mysteries)
Quicksolve Whodunit Puzzles