Gabriel Delle is an African ex-cop in the service of the Vatican. Born in Nigeria to heathen parents, became assistant to a missionary, assisted him in an exorcism that went awry and escalated to a fire only he survived. He spent a few years in the Nigerian PO-lice, where he made detective, but was eventually recruited by the Vatican as a valuable inquisitor.

Deborah Black is a social worker and a devote nun. Born in London to defunct family, had a very tough childhood and eventually joined a nunnery. Was allocated by the special Vatican forces several months ago, sent to their paramilitary boot-camp and finished top of her class.