Edgar Wallace 
Door with Seven Locks: Green Popular Penguins 
Green Popular Penguins

Detective Dick Martin is leaving Scotland Yard. His final job is to bring in Lew Pheeney, wanted in connection with a bank robbery. When Lew confesses to trying to open a dead man’s tomb, however, Martin has a mystery he must unravel. He races to find the connection between an attractive young librarian, a mad scientist and the vanished heir to a vast fortune, as everyone becomes entangled in a web of fraud, deceit, torture and murder. The Green Popular Penguins Story It was in 1935 when Allen Lane stood on a British railway platform looking for something good to read on his journey. His choice was limited to popular magazines and poor quality paperbacks. Lane’s disappointment at the range of books available led him to found a company – and change the world. In 1935 the Penguin was born, but it took until the late 1940s for the Crime and Mystery series to emerge. The genre thrived in the post-war austerity of the 1940s, and reached heights of popularity by the 1960s. Suspense, compelling plots and captivating characters ensure that once again you need look no further than the Penguin logo for the scene of the perfect crime.