De Costa investigates when a young girl found injured by the river accuses a local healer of harming her during an Angolan ritual exorcism. However, upon investigation, she discovers that in fact it is simply the case that the young girl is being bullied at school - but during the course of the investigation, makes friends with the pastor of the local church in the hope of creating a further bond within the community. Meanwhile, Smithy puts on a brave face for his court appearance, but CID's efforts to link Pete Larson with Louise's death are derailed when their one lead - a gang member held by Nadir on drugs charges - slips through the net when he disguises himself with a false identity.