Calder and Tosh turn their focus onto Lisa, until her confession unearths a shocking event and leads the team back to Annie's inner circle.

Cast: Leeroy Boone, Nalini Chetty, Killian Coyle, Liz Ewing, Jacob Ferguson, Tibu Fortes, Ian Hart, Lesley Hart, Lewis Howden, Robert Jack, Ashley Jensen, Tara Lee, Sarah MacGillivray, Conor McCarry, Gemma McElhinney, Nathalie Merchant, Steven Miller, Alison O'Donnell