When Rex Fortescue dies while sitting at his desk in the City, it's determined that he was in fact poisoned.
Julia McKenzie as Miss Marple Rose Heiney as Gladys Laura Haddock as Miss Grosvenor Kenneth Cranham as Rex Fortescue Thea Collings as Tilly Lucy Cohu as Pat Fortescue Rupert Graves as Lance Fortescue Matthew Macfadyen as Inspector Neele Edward Tudor-Pole as Professor Bernsdorrf Ralf Little as Sergeant Pickford Helen Baxendale as Mary Dove Ken Campbell as Crump Anna Madeley as Adele Fortescue Joseph Beattie as Vivian Dubois Wendy Richard as Mrs Crump Ben Miles as Percival Fortescue Liz White as Jennifer Fortescue Hattie Morahan as Elaine Fortescue Paul Brooke as Billingsley Chris Larkin as Gerald Wright Prunella Scales as Mrs MacKenzie Rachel Atkins as Sanatorium Sister Greg Bennett as Police Constable Andrew Care as Doctor
