The Woman of Mystery by Maurice LeBlanc

Paul Delroze anxiously turned the page, as though hoping that the plan of escape might have proved successful; and he received, as it were, a fresh shock of grief on reading the first lines, written the following morning, in an almost illegible hand:

"We were denounced, betrayed. Twenty men were spying on our movements. They fell upon us like brutes. I am now locked up in the park lodge. A little lean-to beside it is serving as a prison for Jerome and Rosalie. They are bound and gagged. I am free, but there are soldiers at the door. I can hear them speaking to one another.