Mr Bowling Buys a Newspaper

In Raymond Chandler's favourite novel, Mr Bowling buys the newspapers only to find out what the latest is on the murders he's just committed... Mr Bowling is getting away with murder. On each occasion he buys a newspaper to see whether anyone suspects him.

But there is a war on, and the clues he leaves are going unnoticed. Which is a shame, because Mr Bowling is not a conventional serial killer: he wants to get caught so that his torment can end. How many more newspapers must he buy before the police finally catch up with him?