"Never mind," Garth snapped. "I'll take all the chances and use it, but at a sound from you—You understand? Come ahead then."

Marlowe slouched down the stairs, muttering apologetically:

"Blest if I know what you want there. Old hole's been closed six years. That was a growler door for the warehousemen. Hold up, Mr. Garth, and I'll strike a match."

Garth ordered him ahead while he pressed the control of his pocket lamp. They continued between grim walls, splashed with mold, beaded with moisture, offering the appearance and the odor of a neglected tomb. They paused before an oak door.

"Don't open," Garth whispered. "Let me get my fingers on the latch."

"Maybe it's locked on the other side," Marlowe whispered back.

But when Garth tried the latch noiselessly he found that the door would open.

"I don't trust you, Papa," he said, "but if you want to make yourself solid at headquarters find a policeman and tell him what I'm up against."

The round, white face leered.

"The cops and I seem hand and glove these days. What are you up against, Mr. Garth? What you want in that empty cellar?"