Kieran was Lula Landry‘s regular driver and a part-time actor in small roles. He is described as a man in his mid-twenties, short, slight and extravagantly good-looking. Cormoran Strike first meets Kieran in the Phoenix Café in Brixton. Later in the book, after interviewing Ciara Porter, Kieran drives Strike and Ciara to Uzi, the nightclub where they meet up with Evan Duffield.
In the TV series, Strike, Kieran is renamed as Nico (perhaps to avoid confusion with the similar-sounding name Ciara?)