Horizons Beyond the Darkness - The Pulse Series, #5

Who can you trust when even the police have become desperate marauders? Their quest for refuge in the southern Bahamas proves short-lived when Artie and Larry and the rest of their crew survive a deadly encounter and must quickly leave the island nation or face accusations of murder. Once again, they set sail for the open sea, with no idea whether what they'll find over the horizon will be any better than the nightmare in their wake.
HORIZONS BEYOND THE DARKNESS is the fifth book in this EMP thriller series featuring a world plunged into darkness, a father stranded in the Caribbean, and a desperate voyage to find his daughter and get her out. In his old life, Dr. Artie Drager practiced medicine at a V. A. hospital in a small southern city. In the aftermath of a devastating EMP, he finds himself wielding a rifle and fighting for his life as he charts new courses to distant horizons.