He cast a sinister look at the little flame which I had enticed to play between the ribs, swept the cat from its elevation, and bestowing himself in the vacancy, commenced the operation of stuffing a three-inch pipe with tobacco.
There are no more uses of "sinister" in the book.
Show samples from other sources
They created a sinister plan to recruit terrorists.
In the movie, there was a sinister plot to kill people and harvest their organs.