Here Comes the Sun - Justin M. Woodward

There had been talk of monsters around the small, quiet town of Fort Whipple for some time before the evening of the brutal massacre.
First it was the livestock. Dead, shriveled bodies lined the fields, drained of their blood.
But when human bodies begin falling from the sky, a dark protector of sorts is dispatched to minimize the casualties.
"Dark, gritty, and an ending that will leave you shook. Justin Woodward has arrived in the old west to rip out your heart and stomp on it."- RJ Roles, author of Pieces of Me