In this harrowing tale of espionage, treachery, and the pursuit of belated justice—Rhona Weaver’s riveting follow-up to her award-winning novel A Noble Calling —FBI Special Agent Win Tyler’s quest to find a missing Russian geologist in Yellowstone National Park turns his world upside down. Loved by fans of John Grisham and perfect for readers of C. J. Box, Nevada Barr, Anne Hillerman, William Kent Krueger, and David Baldacci 2023 Grand Prize for Fiction (Next Generation Indie Book Awards) 2023 Best Christian Fiction ( Next Generation Indie Book Awards) 2023 Best Second Novel ( Next Generation Indie Book Awards) 2023 Finalist for the Eric Hoffer Award for Commercial Fiction (Eric Hoffer Foundation) 2023 Gold Medalist for Religious Fiction (Independent Publisher Book Awards) 2023 Finalist Action/Adventure Novel ( Next Generation Indie Book Awards) Rookie FBI Special Agent Win Tyler should be resting on his laurels after emerging from the False Prophet case a hero. Instead, he finds himself surrounded by mystery and danger after a woman’s severed hand emerges from a toxic thermal pool at a local geyser. Win soon discovers that there are other women missing from the park. Are these disappearances murders or simply unfortunate accidents? Evidence suggests the skeletal remains belong to a missing Russian scientist, and Win’s quest to find answers takes him to Kamchatka, Russia, where he’s forced to take on an espionage role he’s not trained to perform. Who can he trust as he navigates an increasingly murky area between good and evil? Are more lives still at risk? Will the search for the lost strengthen his faith as he strives to bring closure and peace not only to the families of the missing but also to his own soul? A Sacred Duty, award-winning author Rhona Weaver’s second installment in the FBI Yellowstone Adventure series, follows Win into a maelstrom of deceit and violence involving a Russian intelligence officer, a mole within the Bureau, and a serial killer. Set against the stunning landscape of Yellowstone National Park and the wilds of Far Eastern Russia, this exciting novel is both a fast-paced thriller and a heartfelt story of loss, trust, and grace. PRAISE FOR RHONA WEAVER'S YELLOWSTONE FBI ADVENTURE SERIES "The characters are entrancing, and Weaver describes scenery like a poet, slipping the reader into the comfort of a Yellowstone cabin where one can almost feel the heat from the nearby hot springs or hear the pound of bison footfalls." — Arkansas Democrat Gazette "Loved it! Awesome book that flat-out rocks! It really honors park rangers, FBI agents . . . [shows them as] real people with real strengths and weaknesses. Great descriptions of the scenery and pure adventure! Can't wait to see what happens next!" —Central District Ranger Kevin Moses, Shenandoah National Park "Read the book in two days! Absolutely loved it, especially how it depicted the problems (and successes) between agencies and different groups within the FBI. Can't wait for the next one!" —Diane O., FBI, retired " A Noble Calling : Mysteries, mayhem, and the maturation of an FBI agent. Win [Tyler] remains determined to honor his sacred oath as an FBI agent, even at the cost of his own physical and emotional well-being." — Philological Review " A Sacred Duty matches its predecessor, A Noble Calling , in presenting a fast-paced narrative . . . a spellbinding series of mysterious occurrences, suspenseful developments, startling revelations, a first-rate mystery novel." — Philological Review " A Sacred Duty goes even beyond her initial success . . . A Sacred Duty reads like a John Grisham novel . . . this book kept me guessing. I'm already looking forward to the third installment." — Arkansas Democrat Gazette