Ellie Explains Everything: The Substitute Who Vanished

By Chris Seyffert

Mr. Wexler walked into Room 214 as Warren Middle School's newest substitute teacher.

Before the day was over, he had vanished.

No one can explain where he went-or why he left behind clues meant specifically for Ellie.

A mysterious blue folder. A brass key stamped with the number 27. Strange messages over the school intercom. Each discovery pulls Ellie deeper into a secret hidden inside Warren Middle School and closer to someone determined to uncover it first.

Ellie notices what everyone else misses. But this time, following the clues could place her directly in danger.

Can she discover what happened to Mr. Wexler before the final clue falls into the wrong hands?

Packed with clever clues, hidden passages, friendship, humor, and unexpected twists, The Substitute Who Vanished is a fast-paced school mystery that invites young readers to solve the case alongside Ellie.

Every Ellie Explains Everything mystery is a complete standalone adventure and can be enjoyed in any order.

• Format: Paperback
• Language: English
• ISBN: B0HD3ZH512
• ISBN13: 9798191044934
• Release Date: August 2026
• Publisher: Independently Published
• Length: 122 Pages
• Weight: 0.33 lbs.
• Dimensions: 0.3" x 5.5" x 8.5"