The Haunted Airman **spoilers**
I have not read the book. I bought the DVD as it looked intriguing.
I gather that the creepy doctor and Toby's beautiful aunt were deliberately trying to drive him insane. Terrorizing him with the doctor staring at him from the windows, all those spiders, stealing his letters to his aunt, killing a fellow patient, etc... Toby obviously was haunted by his murdering a child during a bombing raid. He was already deeply shell shocked, but those two drove him mad. Finding his aunt in bed with that doctor drove poor Toby to murder his betraying aunt. Sad.
WHY? What happened to the motive? Was Toby wealthy and they wanted his money?
Has anyone got an answer? Why was the motive excluded from the film? Dumb.