I did not reply.

Bending over, her lips met mine in one fierce passionate caress.

Next second we were startled by a strange noise, sounding suspiciously like a footstep upon the gravel. We listened, but the sound was not repeated.

“Hark!” she whispered anxiously. “If my husband should find you here, would it not compromise me?”

With a force I should never have suspected, she led me to the door, and, after giving me a gentle push, locked it behind me.

“Adieu!” I murmured, as tenderly as I could.

There was no answer.

Through the keyhole I could see Mariette kneeling before a crucifix on the opposite wall.

Then I turned and went forth into the darkness.