The Abandoned Room

How was the murder accomplished in a room with both doors locked on the inside and the windows too high for someone to climb in without warning the occupant? Were what one character firmly believed were psychic forces at work in The Abandoned Room? The Abandoned Room begins with an account of the discovery of the body of Silas Blackburn in that very bedroom, long shunned because of its history of family members dying there from various types of injury to the head. And this death was after Silas had been going around terrified out of his wits, but refusing to say why he was afraid or indeed who or what it was he feared.