“What are we going to do?” I whispered.
“Watch.”
“But—”
“I do not expect anything to happen for at least an hour, probably two hours, but the—”
But his words were interrupted by a long thin drawn cry:
“Help!”
A light flashed up in the second floor room on the right hand side of the house. The cry came from there. And even as we watched there came a shadow on the blind as of two people struggling.
“Mille tonnerres!” cried Poirot. “She must have changed her room!”
Dashing forward, he battered wildly on the front door. Then rushing to the tree in the flower-bed, he swarmed up it with the agility of a cat. I followed him, as with a bound he sprang in through the open window. Looking over my shoulder, I saw Dulcie reaching the branch behind me.
“Take care,” I exclaimed.