Should I fall / Scott Shepherd.

Enhanced descriptions from Syndetics:

When John Frankel's ex-wife is discovered dead on the floor of his Manhattan studio apartment, the NYPD Detective instantly becomes the prime suspect in her murder. Then more information surfaces, linking his gun to the fatal bullet, a motive is discovered, and Frankel flees the city, all of which further convinces his colleagues of his guilt.

In spite of the mounting evidence, Frankel's bride-to-be, Rachel Grant, and her father, Austin Grant, formerly of Scotland Yard, are certain of his innocence. But with the police under orders to use whatever force necessary to stop what they view as a dangerous criminal, the duo will have to act fast, before the manhunt goes violently wrong.

The investigation and relentless chase after Frankel takes them across the country, from the tropical shores of Hawaii to a deadly midnight rendezvous in a cemetery in northern Maine. And as that game of cat-and-mouse unfurls, so too does a complex murder plot with multiple victims--the ultimate solution of which will keep readers baffled and breathless until the very end.

The second mystery from Scott Shepherd, the showrunner and screenwriter whose credits include The Equalizer, The Dead Zone and Miami Vice, Should I Fall is a fast-paced and expertly-crafted whodunnit that is as puzzling as it is entertaining.