Mary Marshall is a social worker who has worked with older people for most of her professional career. She was the director of the Dementia Services Development Centre at the University of Stirling from 1989 until she retired in 2005, and now writes and lectures in dementia care. Mary chaired the steering group for the new dementia standards in Scotland.
Alan Chapman is a Western magician and writer, a Magus of the A.'.A.'. and a member of numerous secret societies. He has appeared in the "Fortean Times" and "Chaos International", and regularly contributes to the award-winning website www.thebaptistshead.co.uk.