(Paperback)

Uncover a secret agent and build spy gadgets with twin sleuths Nick and Tesla in this zany, action-packed middle grade adventure by 'Science Bob' Pflugfelder!

(Paperback)

Uncover a secret agent and build spy gadgets with twin sleuths Nick and Tesla in this zany, action-packed middle grade adventure by 'Science Bob' Pflugfelder!

(Hardback)

Nick and Tesla are bright 12-year-old siblings with a knack for science, electronics, and getting into trouble. When their parents mysteriously vanish, they're sent to live with their Uncle Newt, a brilliant inventor who engineers top-secret gadgets for a classified government agency.

(Hardback)

Illustrated comic-adventure stories about brother-and-sister wiz kids who build "McGyverish" contraptions to escape their predicaments

(Hardback)

Third installment of the illustrated comic-adventure stories about brother-and-sister wiz kids who build McGyverish contraptions to escape their predicaments

(Hardback)

Super-smart kid inventors Nick and Tesla Holt track down their parents in their biggest mystery adventure yet