How to Write a Convincing Alibi, by Someone Who Has Written Many

A practical guide for cats, children and anyone caught near a broken vase.
Interview With an Informant: A Pigeon Who Wishes to Remain Nameless

A transcript of a difficult conversation on a rooftop.
Field Guide: Six Types of Suspect and How to Identify Them

A taxonomy of the persons most likely to have done it, whatever it was.