“The death dealt to Harshaw was dealt to another. It will strike again to those who use no caution. Go back, Cardona, to your first clew.
“Seek for death at the place of death. There you will find the trail.”
The receiver clicked at the other end of the wire. Joe Cardona sank back in his chair.
The detective’s face was white and tense. Every word that the mysterious voice had spoken echoed through his brain.
There were clews to every death! Danger still lurked at the apartment where Silas Harshaw had been slain! These statements, meager though they might seem, meant worlds to Cardona.
But more important than them all was that one emphatic utterance that pertained to tomorrow night. Those words had been spoken by The Shadow — the man who never failed!
“Death — will — not — take — place!”
CHAPTER XVII
THE THREE CLEWS
IT was the next afternoon when Professor Roger Biscayne entered the office of Police Commissioner Weston. Accompanying the spectacled psychologist was a droopy-faced man of about fifty years of age.