The Mystery of the Propitious Portal

A historic mutiny. A midnight clue. And a family history that time forgot.

Step into mysteries that demand courage, discernment, and the will to seek the truth. Conceived and co-written by the daughter of Robert Arthur - the creator of the Three Investigators universe - this restoration of the classic series takes its iconic characters into a new age, with gripping contemporary adventures for young readers who crave meaning, want to share in the growth of characters they admire, and seek a w...