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Books about puzzle-solving for readers of all ages.

Patrick Carman

Keith Moseley

Richard Spiering, Ruth Spiering

Kate Forsyth

Paul Haven

John Bellairs

Rolf Heimann

Michael Stadther

Carolyn Keene

Susannah Leigh

Tony 'Anthony' Tallarico

Piers Harper

Trey King, Fractured Fractured Pixels

Jean Marzollo

V. K. Finnish

Monica Hughes

Bill Doyle

Susannah Leigh

Lari Don

John Bellairs

Blue Balliett

Rebecca Heddle, Annabel Spenceley

Scoular Anderson

Jean Marzollo