He often called this his den.

He lighted a lamp on the table and drew the chair up to it.
On the boards of the partition in front of him were pasted many presentments of his favourite screen actress, Beulah Baxter, as she underwent the nerve-racking Hazards of Hortense.

The intrepid girl was seen leaping from the seat of her high-powered car to the cab of a passing locomotive, her chagrined pursuers in the distant background.
She sprang from a high cliff into the chill waters of a storm-tossed sea.

Bound to the back of a spirited horse, she was raced down the steep slope of a rocky ravine in the Far West.

Alone in a foul den of the underworld she held at bay a dozen villainous Asiatics.