Richard Harries Professor Richard Harries was a scientist . He was especially interested in the brain and performed many experiments involving it . Biography . Early life . Richard was the brother of Catherine Harries . The pair got on well and both liked science . Richard was a cocaine addict ; he had puncture marks on his arm . Richard and Catherine blackmailed George Wallace over an affair with his maid , Beryl Green , and Gordon Seavers over his publishing of someone else ' s work in his name . Their blackmail of Seavers led him to commit suicide . At Banquo Manor . Richard was invited by George Wallace to conduct experiments on brain waves at Banquo Manor . George allowed him to do so due to the blackmail . He set up a laboratory in the conservatory . He used rat s in his tests and through brainwaves , he was able to transfer knowledge from one rat to its sibling . Richard was able to translate technical French ; he did so with a number of books . John Hopkinson came to give Harries legal advice ; Richard looked down upon him and treated him with contempt ; Hopkinson did likewise . Richard was engaged to Susan Seymour , who was considered his opposite in personality . She called off the marriage after they had an argument . Harries invited Dr Friedlander to assist in his experiments . He attempted to make up with Susan but was interrupted . The experiment involved trying to access a " collective memory " that he believed existed in the subconscious . Harries attached himself and his sister via headpieces to his machine . A power overload caused the headpieces to burn . Catherine fell unconscious . Connection was made , but Richard was killed . His temples were charred and black ; his body fell into the fire . When it was eventually pulled out , he was unrecognisable . Hopkinson had switched around some wires in Harries ' experiment causing the overload . He did this in vengeance for Seavers ' death . Under Catherine ' s control . Catherine was controlling Richard . She wanted to protect his honour and used him to kill George Wallace , Elizabeth Wallace , and Beryl Green . Cuthbert Simpson shot him twice with a shotgun . This only delayed him . Harries caught John ' s ankle but he was pulled free . He chased them to Hopkinson ' s room , where they had barricaded themselves . He smashed the door in . Catherine pretended she was subconsciously controlling Richard and halted him temporarily . Catherine followed Ian , John , Baker , and Friedlander when they went to get chain to tie up Richard . She had Richard follow her and told them she was consciously controlling Harries in the killings , that she was connected to him and that she would now kill them . Catherine claimed that Richard was still alive and that she could talk to him through their link . Baker knocked her over and they barricaded her out . Catherine used Richard to break into the room from outside while she waited in another room . He came through the French window but with a collective effort they knocked him out and barricaded the window . He returned to Hopkinson ' s room where Simpson , Susan , and Kreiner were . He attacked Simpson , tearing his eyes out . The group then escaped out the window . Harries went downstairs and exited the mansion , pursuing Hopkinson and Friedlander . He followed them to George ' s shed and back again . He managed to break through the barricade in the drawing room . Catherine commanded him to kill Susan . He hesitated but eventually complied , trying to throttle her . He was pulled free and Susan fell unconscious . Harries then attacked Baker who began putting dynamite into his pockets . He was again pulled away ; Catherine then shot and killed Baker . Hopkinson threw a lamp at him , igniting the dynamite . It exploded , tearing his body apart . His dismembered arm landed near Catherine and grabbed her when she threatened Susan . Realising he loved Susan more , she frantically shot the arm . ( PROSE : " The Banquo Legacy " ) Personality . Harries was a disagreeable man . He had no qualms about blackmailing Seavers and Wallace . He was pompous to Hopkinson , whom he thought less intelligent . Harries acted angrily towards Hopkinson when he looked through the Necronomicon in his library . Despite this , Susan had great affection for him . ( PROSE : " The Banquo Legacy " )