Books in the Waters of Time series

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?

After the disappearance of her father and sister, Ellen Creighton wants nothing to do with the holy water they were seeking, even if it would cure her deadly genetic disease--until a friend helps her recognize its true power in this suspenseful, time-crossing romantic adventure.