martin keeps the truth about sarah from sonia but sarah tells martin's family she is dating a "certain" married man, and later confesses to martin's mother, pauline fowler (wendy richard) that it is martin. martin finds the pressure intolerable and reports sarah to the police, but they do not believe him. while he is out, pauline "falls" off a stepladder, and sarah disappears. martin tracks her down and threatens her until she confesses that she pushed pauline. he tells sarah he will kill her if she shows her face again. sarah calls the police and martin spends most of the day at the police station. during this time sarah goes to the fowlers' house and tells sonia of martin's deceit. when martin arrives, he apologises to sonia and promises it meant nothing and will never happen again. when sonia forgives him, sarah refuses to leave, still adamant that she and martin are meant to be together. she finally admits that although martin fell asleep in her bed, they did not have sex. sarah realises she can never be with martin so she stabs him in his stomach with a pen knife. during the fight, sonia picks up a fruit bowl, hits sarah on the head with it, and then calls an ambulance for martin. sarah falls unconscious and is later committed to a mental institution.