Morwenna's parents Jack and Tara pay a surprise visit, having been working as missionaries in Kenya. However, the reunion is tinged with sadness when it turns out that Morwenna's mother has liver cancer, and has decided against treatment because of h... (more)er faith. Louisa's first online call for her new course does not go as planned - especially when Martin tells the lecturer exactly what he thinks - and Joe investigates a break-in at the school where nothing has been stolen.