Читать книгу The Crystal Stopper онлайн

51 страница из 83

Constraining himself to keep his temper, he asked:

“Did the letter come while the woman was here?”

“At the same time. The porter rang at the same moment.”

“Could she see the envelope?”

“Yes.”

The conclusion was evident. It remained to discover how the visitor had been able to effect her theft. By slipping from one window to the other, outside the flat? Impossible: Lupin found the window of his room shut. By opening the communicating door? Impossible: Lupin found it locked and barred with its two inner bolts.

Nevertheless, a person cannot pass through a wall by a mere operation of will. To go in or out of a room requires a passage; and, as the act was accomplished in the space of a few minutes, it was necessary, in the circumstances, that the passage should be previously in existence, that it should already have been contrived in the wall and, of course, known to the woman. This hypothesis simplified the search by concentrating it upon the door; for the wall was quite bare, without a cupboard, chimney-piece or hangings of any kind, and unable to conceal the least outlet.