The Moonstone — Claire Cross

North England, 1390. Falsely accused of witchcraft, ever-optimistic Viviane is sure the truth will set her free. But when her execution is imminent, only a wish on an unusual moonstone pendant bequeathed by her father offers any solace. Thinking it harmless, and sympathetic to her plight, the knight escorting her to the execution grants her request -- and is shocked when Viviane vanishes...

Salt Spring Island, British Columbia, 1999. Suddenly, Viviane finds herself in a wondrous realm she believes is the legendary Avalon. Befriended by some rather eccentric locals, she quickly finds the warmhearted island community happily compatible with her sunny disposition. But the hand of justice soon reaches across time and space to bring her back. The hand, however, belongs to the same handsome knight responsible for her freedom. And soon this powerful man, devoted to upholding the law, finds himself caught between duty and a far more powerful emotion...