Mary Roberts Rinehart

“ Jamieson," I said suddenly, "I wish you would do one thing: I wish you would come to Sunnyside and spend a few days there. The ghost is not laid. I want you to spend one night at least watching the circular staircase. The murder of Arnold Armstrong was a beginning, not an end." ”

“ Jarvis, who asked him to come at once to Sunnyside, as there had been an accident there, and Mr. Arnold Armstrong had been shot. He had dressed hastily, gathered up some instruments, and driven to Sunnyside.
He was met by Mr. Jarvis, who took him at once to the east wing. There, just as he had fallen, was the body of Arnold Armstrong. There was no need of the instruments: the man was dead. In answer to the coroner's question—no, the body had not been moved, save to turn it over. It lay at the foot of the circular staircase. Yes, he believed death had been instantaneous. ”

“ The day that the murderer is discovered, I will leave."
"Then, judging by what I have heard, you will be back in the city very soon," he said. And I knew that he suspected the discredited cashier of the Traders' Bank. ”