Alexandra "Alex" Millar (Kate Bracken) was a young, Scottish woman who came to Barry Island for a holiday with her family. However, she is later killed and becomes a Ghost. She also takes residence with Tom and Hal at Honolulu Heights as a new supernatural trinity. She has become Human after she defeated the devil at the end of series 5. This is was shown to be an illusion created by the Devil in the series 5 DVD extra.