Oddity: on page 1, Clark Kent mysteriously is shown in a suit, then undershirt, and back to suit again with no explanation.
The last panel of the story introduces by illustration and text a new feature called The Spectre.
Inker was formerly suggested as Dennis Neville, but the style is very close to confirmed Cassidy art.
Writer credit added by Craig Delich.
On page four Pep is reading an issue of "Action Comics".
Moldoff signs on the final page.
Letterer credit added by Craig Delich.
Page includes lots of small ads from stamps dealers.
Zatara is visiting Lord Ralway in Sussex, England, and his host mentions in the first panel that they are close to where Sherlock Holmes "used to perform his feats of detection". Holmes did retire to Sussex in his old age, but the plot makes greater use of themes from "The Hound of the Baskervilles", which occur mainly on Dartmoor, in the county of Devon.