Read "Dr. Nikola Returns" by Guy Boothby online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
As soon as I woke next morning I went into Nikola's room. To my surprise he was not there. Nor did he put in an appearance until nearly an hour later. When he did, I could see that he was completely exhausted, though he tried hard not to show it.
"What have you been doing?" I asked, meeting him on the threshold with a question.