Christina St Clair, born and raised in England, has lived in France and Germany, but now resides in the United States where she has been a chemist, a pastor, a spiritual director, and a novelist. She is interested in multiculturism and the spirituality of many traditions, including Buddhism. Ten Yen is the prequel to a series which includes Ten Yen True (co-authored with Amanda Armstrong), Ten Yen Forever (Amanda Armstrong), with another story in the works.