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 Tom Clegg as Junkie Sam Troughton as Wilder Rayna Campbell as Jacqui Kerry Howard as Trace Mark Oliver as Seedy Looking Guy Alexander Cobb as Letting Agent Iain Aitchison as Landlord