 In " Eyewitness " ( 1993 ) , Tessa witnesses the brutal murder of former artist Anne Wheeler ( Diana <unk> ) , and reacts angrily when she realizes that the police will do nothing about it , saying : " I 'm not hysterical , I don 't see things , and I 'm not looking for attention . I just want something to be done . " She decides to find the murderer on her own . When MacLeod tells Tessa that she is stronger than Anne , and that if something happened to him she would be fine , Tessa retorts , " You only think so because it suits you . " The murderer is Chief Police Officer Andrew <unk> ( Tom Butler ) who is beheaded by MacLeod after <unk> failed to kill Tessa . 
