Scientist Marian Creighton was skeptical of her father's lifelong research of ancient holy water--until she ingests some of it and finds herself transported back to the Middle Ages. With the help of an emotionally wounded nobleman, can she make her way back home? Or will she be trapped in the past forever? The ultimate cure that could heal any disease? Crazy. That's exactly what research scientist Marian Creighton has always believed about her father's obsession, even if it does come from a desire to save her sister Ellen from the genetic disease that stole their mother from them. But when her father falls into a coma after drinking a vial of holy water believed to contain traces of residue from the Tree of Life in the Garden of Eden, all of Marian's assumptions must be questioned. He's left behind tantalizing clues that suggest he's crossed back in time. Insane. Until Marian tests his theories herself and experiences strange visions of medieval times. With the help of one of her father's colleagues, Marian discovers that she is not the only one interested in his research. Stalking, break-ins, and a kidnapping convince her that she must take the plunge and follow her father back to the 1380s or risk losing him--and her sister--forever. Bestselling author Jody Hedlund is your guide down the twisting river of time to a volatile era of superstition, peasant revolts, and chivalry in this suspenseful story.