When Bosch finds a needle in the haystack - a woman imprisoned for murdering her husband, a sheriff's deputy - they discover evidence that doesn't add up, and a department pushed for quick closure in the killing of one of its own.

But is this rushed justice - or something more sinister?

As they face a David versus Goliath court battle, the secrets which could lead to an innocent woman walking free could also mark the end of the Haller-Bosch dream team.