Barbara Nickless Books in Order

Barbara Nickless is a Wall Street Journal and #1 Amazon Charts bestselling author of the Sydney Parnell police procedural series. Her gripping novels, featuring a railway cop and her K9 partner, captivate readers worldwide. Praised by acclaimed author Jeffery Deaver, Special Agent Parnell is a beloved character in thriller fiction. Nickless's books have garnered numerous accolades, including Colorado Book Awards for the first two titles in the series. Her debut novel, Blood on the Tracks, was a Suspense Magazine Best of 2016 selection and won the Daphne du Maurier Award of Excellence for mystery fiction. With a fourth installment, Gone to Darkness, published in 2020, and the series optioned for television, Nickless continues to enthrall audiences. Visit <a target="_blank" href="http://www.barbaranickless.com" rel="nofollow">www.barbaranickless.com</a> to sign up for her newsletter.

Bibliography verified: January 2026

Book Series by Barbara Nickless

About Barbara Nickless

Barbara Nickless is a Wall Street Journal and #1 Amazon Charts bestselling author of the Sydney Parnell police procedural series. Her gripping novels, featuring a railway cop and her K9 partner, captivate readers worldwide. Praised by acclaimed author Jeffery Deaver, Special Agent Parnell is a beloved character in thriller fiction. Nickless's books have garnered numerous accolades, including Colorado Book Awards for the first two titles in the series. Her debut novel, Blood on the Tracks, was a Suspense Magazine Best of 2016 selection and won the Daphne du Maurier Award of Excellence for mystery fiction. With a fourth installment, Gone to Darkness, published in 2020, and the series optioned for television, Nickless continues to enthrall audiences. Visit <a target="_blank" href="http://www.barbaranickless.com" rel="nofollow">www.barbaranickless.com</a> to sign up for her newsletter.

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