Maigret Enjoys Himself: Inspector Maigret, Book 50 (Unabridged‪)‬

Inspector Maigret is meant to be taking a holiday, but he can't resist following the development of his colleague Janvier's case in the papers - and playing a few tricks on the way.  

Standing at the window in the middle of the morning, vaguely observing the comings and goings in the street, he had a feeling that reminded him of certain days in his childhood, when his mother was still alive and he was off school because he had the flu or it was the end of term. It was the feeling of finding out what went on when he wasn't there.