The Hardy Boys Collection Books 11–20 (10-Book Box Set)

This official Hardy Boys paperback box set includes Books 11–20 of the classic mystery series, published by Grosset & Dunlap in 2017.

Follow teenage detectives Frank and Joe Hardy as they solve fast-paced cases filled with suspense, danger, and clever twists. This collection features ten complete adventures, all in matching paperback editions, housed together in the original publisher box.

A great addition for young readers discovering the series, longtime Hardy Boys fans, or collectors looking for a clean, complete set.

📚 Titles Included

While the Clock Ticked

Footprints Under the Window

The Mark on the Door

The Hidden Harbor Mystery

The Sinister Signpost

A Figure in Hiding

The Secret Warning

The Twisted Claw

The Disappearing Floor