Guest Stars Grace Calder as Sgt Lucy Haines Kojo Kamara as DS Selforth Guillermo Bedward as Tom Isla Gie as Holly Marcus Fraser as Souljah James Nelson-Joyce as Spider Sam Troughton as Wilder Gerard Horan as Hilgard Jayde Adams as Julie Liam Garrigan as Young Frank Ella Kenion as Sales Woman Katy Carmichael as Kathy Francesca Knight as Young Louise Tallulah Conabeare as Young Margaret