Driving Heat - Richard Castle

On the morning of her first day as the new captain of the Twentieth Precinct, Homicide Detective Nikki Heat is rocked when her NYPD shrink washes up dead on the banks of the Hudson River. But the jarring murder of the man who knew her most intimate secrets is only the first of a series of blows to batter her. She is soon blindsided by the discovery that her fianc , Pulitzer Prize-winning reporter Jameson Rook, had been secretly meeting her psychologist as part of an explosive investigative article he is writing. Nikki s sense of betrayal deepens when Rook refuses on ethical grounds to share confidential information he has learned about the victim. His headstrong stance and continued meddling in Heat s case strain their engagement to the breaking point as their personal lives dive straight for a collision. Meanwhile, Heat races to stop an ingenious repeat killer with a chilling MO and a long list of targets.