“A gritty, hard-boiled crime novel with breathless action and deep, sturdy characters. Detective Sydney Parnell and her partner Clyde, a police dog, are a tantalizing duo, and the story’s narrative and dialogue are authentic and witty and demand compulsive reading. Gone to Darkness is everything you want in thriller fiction.” —Robert Dugoni, #1 Wall Street Journal bestselling author of the Tracy Crosswhite Series

“Nobody does atmosphere better than Barbara Nickless. With deft strokes, she draws impending doom within bleak settings and then colors them with vivid action and brilliant characters, both human and canine. Gone to Darkness is mystery and suspense writing at its best!” —Margaret Mizushima, award-winning author of the Timber Creek K-9 Mysteries

“Barb Nickless’s Gone to Darkness is another stellar entry in the Sydney Rose Parnell series. Even though she’s now a Denver police detective, Sydney and Clyde catch a case involving trains, a unique milieu that Nickless masterfully evokes. Readers who enjoy an atmospheric setting, a kick-ass yet vulnerable heroine, solid police procedurals, fast-paced yet lyrical writing, and/or the closeness of a human-dog partnership should immediately buy or borrow every book in this series. (I stop short of suggesting stealing a copy, but if that’s your only option…)” —Laura DiSilverio, award-winning and national bestselling author of The Reckoning Stones