Problem solving ninja / by Mary Nhin ; pictures by Jelena Stupar (ISBN:9781637311752) -- Spy mazes / written by Sam Smith ; illustrated by Valeria Danilova, Sean Sims, Cris Ramos, Hugo Herrera and The Boy Fitz Hammond (ISBN:9781474998444) -- Sleuth & solve-- science / Victor Escandell ; adaptation of mysteries by Ana Gallo ; English translation by Feather Flores (ISBN:9781797214559)
|