Dr. Pren and the Secret of the Formula

By Maximo Castellanos and Máximo César Castellanos

Each day that passes without knowing everything about Dr. Pren, George is at a greater risk of losing his life. In the small town of Pascanwon, George returns to Dr. Pren's cabin. On this third visit, George discovers how Dr. Pren ends up putting his life in danger by facing his enemy, Adam Hopper, and fighting fierce creatures known as Jintels, all while discovering the great secret of the formula.

• Format: Hardcover
• Language: English
• ISBN: B0BBPDNBBG
• ISBN13: 9798218034344
• Release Date: July 2022
• Publisher: Editorial Ramy
• Length: 110 Pages
• Weight: 0.61 lbs.
• Dimensions: 0.3" x 5.5" x 8.5"
• Age Range: 9 to 12 years
• Grade Range: Grades 4 to 7