The Eureka key

Sam (a puzzle master) and Martina (a history whiz) become involved in a dangerous quest to find seven keys left behind by Benjamin Franklin and a secret society of descendants, which, when gathered together, unlock a powerful weapon, so the middle schoolers must solve the puzzles, find the artifacts before the bad guy does, and save the nation.

שנה

2016

שפה

English

סדרה

Secrets of the seven

מהדורות

1

עמודים

227

ISBN

9781619637313

מקור הנתונים: Wikidata