Even at that instant Arnold seemed suddenly to see the flash of a hand through the glass-topped door, to hear the hoarse cry of the stricken man.
"I saw nothing but the man's hand!" he muttered, in a voice which he would scarcely have recognized as his own.

"I saw his hand and his arm only.

He wore a red signet ring." Sabatini inclined his head in an interested manner.
"A singular coincidence," he remarked, pleasantly.

"My sister has already told me of your observation.

It certainly is a point in favor of our friend Starling.