Check out the synopsis and mysterious cover art for The Hardy Boys #13 Mark on the Door The Hardy Boys Books ~ Titles, Covers, and More. 🙂
This volume of the Hardy Boys series has their pal Chet Morton helping out on the mystery. 😎 He’s a nice guy and even though he’s not real fond of danger, he faces it bravely and doesn’t run away. Have you read this one? Read it more than once? About to read it? You can find The Hardy Boys #13 Mark on the Door at libraries and booksellers in either hardback or ebook. 😎
Hardy and Drew Mysteries 