In this second collaboration between Fleming and Peters, Troubled Waters continues the story of veteran transit cop, Morris Fitzgerald, who is struggling to return to full-time work with Boston's Mass Bay Transit Authority. While working through his own mental and physical shortcomings, he goes about trying to locate his homeless cousin and stumbles into a conspiracy to rid the city of its most vulnerable residents through an orchestrated disaster. Like its 2016 precursor, Code Black, Troubled Waters provides fantastic insight into the transit system and politics of one of the country's oldest and most-congested cities. A page-turning thriller that blends history and suspense, Troubled Waters is a distinctly Boston novel that is as engaging as it is insightful.