Mark Fowler

The Invisible Spy

1994

The Emerald Conspiracy

1994

The Crimebusters Investigate

1997

The Best worst and most unusual

1994

La Conspiracion de La Esmeralda

1995

Felton & Fowler's More best, worst, and most unusual

1996

Felton & Fowler's Famous Americans you never knew existed

1982

Ultimate Guide to Labrador Retriever Breeding

2022

The Usborne book of superpuzzles

1994

The third Usborne book of puzzle adventures

1993

The fifth Usborne book of puzzle adventures

1996

The Fifth Usborne Book of Puzzle Adventures

1995

The Crimebusters Investigate (Usborne Puzzle Adventures, 25)

1998

Silver

2016

Sextet

2018

Man Upstairs

2015

Logic Puzzles

1994

Logic Puzzles (Usborne Superpuzzles : Advanced Level)

1994