Download or read book Hardy Boys 13: The Mark on the Door written by Franklin W. Dixon and published by Penguin. This book was released on 1934-06-01 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: In their motorboat the Sleuth Frank and Joe Hardy search Barmet Bay for a dangerous stranger who has stolen a valuable boat. Suddenly, in the eerie fog, they spot the craft drifting aimlessly out to sea. What happens next starts the young detectives and their pal Chet Morton on an intriguing adventure that takes them to Mexico and into the comparatively unexplored desert and mountain regions of Baja California.