num_pages: 228
description: The Hardy Boys and Mr. Hardy travel to Mexico to locate a missing witness in an oilrights trial.
language: English
title: The Mark on the Door
titlecomplete: The Mark on the Door (Hardy Boys, #13)
genres: Middle Grade, Detective, Childrens, Crime, Young Adult, Classics, Mystery, Mystery Thriller, Adventure, Fiction
ratings_count: 2899
places: Mexico
series: The Hardy Boys
publisher: Applewood Books