[sufue]

A Fine Line is the fifth and most recent (2014) in the Guido Guerrieri series by Gianrico Carofiglio - at least until the new one comes out next month, after a long hiatus. Per SYKM, A Fine Line was a finalist for the 2017 International Dagger Award. It has dropped to $1.99/£1.99 at Kindle US/UK right now.

Kindle US: https://www.amazon.com/dp/B017QL8NMW
Kindle UK: https://www.amazon.co.uk/Fine-Line-G...dp/B083CMVD5S/

Spoiler:

The fifth in the best-selling Guido Guerrieri series.

When Judge Larocca is accused of corruption, Guerrieri goes against his better instincts and takes the case. Helped by Annapaola Doria, a motorbike-riding bisexual private detective who keeps a baseball bat on hand for sticky situations, he investigates the alleged links to the mafia. Of course Guerrieri cannot stop himself from falling for Annapaola's exotic charms.

The novel is a suspenseful legal thriller but it is also much more. It is the story of a judge who, to quote Dostoevsky, "lies to himself and listens to his own lies, so gets to the point where he can no longer distinguish the truth, either in himself or around himself."