Although they are only janitors at a detective agency, the boys pass themselves off as sleuths and are engaged to guard an inventor delivering a new bomb. They outwit enemy agents after the bomb and wind up sinking a Japanese submarine.
简介： Although they are only janitors at a detective agency, the boys pass themselves off as sleuths and are engaged to guard an inventor delivering a new bomb. They outwit enemy agents after the bomb and wind up sinking a Japanese submarine.
