Guest Stars Grace Vance as Molly Drake Joseph Long as Luigi Geff Francis as Viv James Adrian Dunbar as Martin Summers Roger Allam as Detective Superintendent Charles "Supermac" Mackintosh Joseph Millson as Dr. Battleford Paola Dionisotti as Old Gypsy mother Darren Clarke as Mechanic Dean Bardini as Terry Ellie Paskell as Alva