"Harry Lomart had served eight years of his life sentence for murder. When his tired, downtrodden wife Pat visited him at Winson Green Prison to give him some news, Lomart went for her. On her return from hospital, her flat was done over by Lomart's heavy mob. And then Lomart escaped from jail...
Whatever Pat Lomart had told him had made him vow to kill her. She was a sitting target. How long would her nerve hold out?"
Recently managed to snag a copy of this, after looking for a number of years, due to the excellent 1972 film version starring Oliver Reed, Jill St. John, Ian McShane and Edward Woodward. Not sure when I'll get around to reading it to see where the film differs, or whether the source material is superior or not - but hopefully it won't be too long.
I'm holding on by a fingernail and my right bollock!