Publisher's Synopsis
When scientist Rajek Quinton was pushed, screaming, down a mineshaft by Emerson Drew's hired killer, Drew and his co-conspirators Darnhome and de Brock were set to exploit Quinton's amazing invention. But he reckoned without Larry Clark of the C.I.D., and Quinton's genius. Larry, aided by Drew's secretary, Joyce Sutton, obtained the evidence needed to send Drew and his cohorts to their doom. But exactly who was Joyce Sutton? And did Quinton really die in the mud-filled pit shaft?
