"… finds her door hacked with an axe …"

I stumbled across something interesting:

Who was Kubrick's co-writer [for The Shining]?

After rejecting King's own efforts at turning his novel into a screenplay Kubrick turned to Diane Johnson, an American novelist and critic who published a number of novels which Kubrick admired, including "The Shadow Knows" which he considered making into a film.

So what is this book about, that Kubrick considered making into a film?

The Shadow Knows by Diane Johnson

The anonymous heroine, N, is a young woman who has broken free of a constricting marriage and is struggling to raise four children alone in a housing project. Coming home one day N finds her door hacked with an axe and smeared with what appears to be a mixture of blood and crankcase oil. A few days later a strangled cat is left outside her apartment door. Everyday, she is plagued by mysterious, disturbing phone calls. Playing detective and attempting to figure out who her enemy may be, N's real fears merge with paranoid fantasy in this fascinating story which rivals the best of Henry James's dark, psychological gothic tales.

I would suspect that one will find more references to The Shadow Knows in Kubrick's The Shining besides the axed door…