The Substitute Network #1: Classified

By Jaymes Mercer

When the teachers are out, the spies are in.

Theo Reyes, age 12, thought his first day subbing for math class would be bad. Then a secret agency recruits him during a fire drill.

Now he's a substitute teacher by day... and a substitute agent by also day.

His mission: stop the PTA from hacking his middle school.

Armed with a hall pass that opens any door, a best friend who weaponizes Shakespeare, and a C- in French, Theo must go undercover before the bell rings on Zero Period.

Rule #1 of AEP: Never break character.

The Substitute Network: Classified is a fast-paced, laugh-out-loud middle grade spy novel packed with mystery, secret agents, school espionage, clever gadgets, and nonstop adventure.

Perfect for readers ages 9-12 who love humorous spy stories, detective mysteries, and action-packed school adventures.

Book One in the Substitute Network series.

• Format: Paperback
• Language: English
• ISBN: B0H5F8B6JP
• ISBN13: 9798235117839
• Release Date: June 2026
• Publisher: Jaymes Mercer
• Length: 242 Pages
• Weight: 0.63 lbs.
• Dimensions: 0.6" x 5.5" x 8.5"
• Age Range: 9 to 12 years
• Grade Range: Grades 4 to 7