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Edward Stratemeyer 002

For the original edition of this book, see The Mark on the Door (original text).

The Mark on the Door is the 13th book in The Hardy Boys series. It was first published in 1934 by Grosset & Dunlap, and the revised edition was published in 1967.

Plot summary

While cruising around Barmet Bay in their speedboat, the Sleuth, Frank and Joe Hardy spot an unexplained submarine and are rammed by another vessel which speeds off. The boys are soon on the trail of the culprit, Pancho Cardillo, but their investigation is stalled when they are attacked by thugs hiding in Cardillo's stolen boat.

Returning home the boys hear of their father's latest case. Fenton Hardy is investigating the disappearance of one Elmer Tremmer, a book-keeper due to testify against fraudsters selling worthless stock in Mexican firm Costa Químico Compañia. Before long the boys have two new clues to follow up. Firstly a ring found in Cardillo's recovered car bearing a strange insignia - a flaming bundle of sticks with a large superimposed letter "P". Secondly, a typewritten note arrives through the post reading simply:


Before long the cases are intertwined and the Hardys, their father and their friend Chet Morton are off to Mexico investigating a criminal known as Pavura who rules through threat and fear and leads a strange cult of Mexican Indians.




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  1. Who Wrote the Hardy Boys? at
  2. The Mark on the Door Major Edition Types at The Hardy Boys Unofficial Home Page
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