What's in the Dark? — Ellery Queen

A blackout leaves New York in chaos as cop Tim Corrigan searches for a shadowy killer in this classic mystery from the legendary author.

High above the sidewalks of Manhattan, Miss Graves is closing up the offices of the Burns Accounting Company when she hears a car backfire. It takes her a moment to realize that there are no cars on the skyscraper's 21st floor. What she heard was a gunshot. But before she has a chance to scream, the lights go out across the Eastern Seaboard. In an instant, New York plunges into darkness, and a killer escapes into a city of shadows.
 
With the blackout comes chaos, as the city's millions erupt into a frenzy of fear. Restoring order falls to the one-eyed peacekeeper of the NYPD, Tim Corrigan, and his closest friend, private detective Chuck Baer. Before the night is through, the 2 men will track down a murderer -- and bring light back into a darkened city.