"On your left, past the wooden pier! Not where the lamp is—beyond that; next to the dark, square building—Shen-Yan's."

It was Inspector Ryman speaking.

"Drop us somewhere handy, then," replied Smith, "and lie close in, with your ears wide open. We may have to run for it, so don't go far away."

From the tone of his voice I knew that the night mystery of the Thames had claimed at least one other victim.

"Dead slow," came Ryman's order. "We'll put in to the Stone Stairs."

CHAPTER VI

A SEEMINGLY drunken voice was droning from a neighboring alleyway as Smith lurched in hulking fashion to the door of a little shop above which, crudely painted, were the words:

"SHEN-YAN, Barber."

I shuffled along behind him, and had time to note the box of studs, German shaving tackle and rolls of twist which lay untidily in the window ere Smith kicked the door open, clattered down three wooden steps, and pulled himself up with a jerk, seizing my arm for support.