Vultures Of Desolate Island

Originally released serially in two issues of Boys Own Paper, October and November, 1928. Released in paperback format in Boys' Wonder Library #25, July 1933. Released in book format in 1938.
Britain has spent an impressive amount of time, money, and effort to establish an air corridor to Japan over the Arctic, including aerodromes and fuel depots. Now someone is causing planes flying that route to disappear, one such craft being found riddled with bullets". A wealthy man, "no friend to England", named Erkunstelt is thought behind it all. The Flying Beetle was deep in the investigation when he sends word requesting the assistance of Major Beverley.