Lamont Cranston

And when the light beam is broken, the circuit's closed, the bomb goes off.

Yes, sir, yes, that's the idea.

The sound of that trumpet, that auto horn, and that fog horn on that plater, and the noise of those airplane motors.

Yes, sir, they could have done it all right.

Whoever thought that one up is dumb, by hindsight.

But I still don't get these notes, these warnings about silence.

Right you are, Commissioner.

These bombings are getting a bit out of hand, aren't they?

No, not all.

Very neat, eh, Commissioner?

Just one thing more, Commissioner.

Do you realize what all this means?

Why, of course I... Each of the notes has contained the word silence.

You must broadcast a general warning to the city at once.

Use the radio, use the newspapers.

Use any means at your command.

But warn the people immediately that there must be absolute silence until the murderer is caught.

They must not play any musical instruments, blow their auto horns.

In fact, they must not do anything to make a loud noise of any kind that might set off another of these tuning fork bombs.

For the penalty may be death.