Chameleon chaos

Description:

Twins Josh and Danny continue following clues leading them to marbles filled with scientific code, despite the fact that mad scientist Petty Potts' REPTOSWITCH formula is having some very strange side-effects.

subjects: Brothers,  Code and cipher stories,  Juvenile fiction,  Ciphers,  Fiction,  Science fiction,  Chameleons,  Twins,  Children's fiction,  Lizards, fiction,  Twins, fiction