Guest Stars Lily Loveless as Anna Robbie Gee as DCI Armstrong Sophie Wu as Jay Francis Magee as Dr. Tremlett Theo Barklem-Biggs as DC Firth Chris Mason as Steve Jenn Murray as Natalie Eleanor Matsuura as Vicky Lloyd Hutchinson as Superintendant Clement Ian Hanmore as Polus Sophia La Porta as Tracy Brandon Robinson as Fred Taylor Zack Morris as Sam Grielson Philip Bird as Mr. Peterson James Greene as Eric