The Hardy Boys: The Mark on the Door - Franklin W. Dixon

Frank & Joe Hardy are the teenage sons of famous private detective Fenton Hardy & his wife Laura. Together, (& sometimes from help with family & friends) they investigate all sorts of crimes & strange occurences.... The Mark On The Door was published in the US in 1934 & was the thirteenth in the series. It was revised in 1967.The book first appeared in the UK in 1973 & was numbered 27 when it was published by Armada. The story starts with Frank & Joe spotting part of a submarine whilst they are on their boat, The Sleuth. Then there's a near accident with a boat called the Ira Q & both boys are then knocked out ...  Read the complete review

In yet another case that leads them to a case linked to their father, Frank and Joe Hardy investigate a smuggling operation quite a way away from home, down in Mexico. As they befriend a village of Indians, some of them start to disappear, and the brothers find out there is a link between the disappearances and the smuggling. Before long, they themselves are in danger as they edge ever closer to the leader of the smuggling ring The Mark On The Door is the 13th Hardy Boys book. The books follow the adventures of Frank and Joe Hardy, sons of fictional supersleuth Fenton Hardy, and are written by Franklin W Dixon, the pen name of Leslie McFarlane. Curiously ...  Read the complete review