Kid detectives Merriam and Webster can solve any mystery with a bit of help! Unscramble word puzzles, navigate letter mazes, and crack the codes in this fun and surprising mystery tale written in rollicking verse. Merriam and Webster visit the International Space Station to discover that the Mars rover has stopped working! The kid detectives blast off in a rocket to find out what happened, uncovering clues among the stars and meeting galactic friends along the way. Can you help Merriam and Webster solve the word puzzles and crack the case of the Mars rover? Packed with puzzles, mazes, riddles, and codes designed to challenge young minds, build vocabulary, and keep kids entertained for hours! Includes a full page of four-color stickers.