7th Heaven by James Patterson

The provided text details a series of arson homicides committed by two young men, Hawk and Pidge, who target wealthy, college-aged couples and leave behind specific Latin phrases at each scene. The narrative follows Sergeant Lindsay Boxer and her partner, Richard Conklin, as they investigate these escalating crimes, initially focusing on the disappearance of Michael Campion and the subsequent trial of Junie Moon, a prostitute who confessed to his murder but later recanted. The investigation deepens as they discover the killers' motive—intellectual thrill-seeking and a desire to expose societal flaws—and their meticulous planning, leading to a dramatic confrontation and the unmasking of the arsonists. Parallel to the main plot, Lindsay navigates her complex relationship with her boyfriend, Joe, and her partner, Rich, while her colleague Yuki Castellano faces professional challenges during the high-profile Junie Moon trial, ultimately receiving crucial evidence that redefines the case.