"Daniel Tate clenched his teeth and looked away just as the needle pierced a vein in his arm,"
"He felt light-headed and suddenly exhaustion dissolved into an unusual calm. He felt himself slipping into water, letting go of his body."
From Silent Creed by Alex Kava. This is an ARC I got from Amazon Vine and will be released at the end of July. I read the first book in the series and really liked it. The feature character trains rescue dogs and I think the dogs steal the story.