 The testimony of Marsh's private secretary, Joanne Braslow, reveals that he had a sexual relationship with Braslow that could have contributed to his death, casting a reasonable doubt as to Rebecca's guilt.The testimony of Marsh's doctor, Alan Paley, is initially very damaging to Rebecca's defence.However, when cross-examined, Frank is able to undermine Paley's credibility and demonstrate that Paley was attempting to blackmail Rebecca into a relationship with him, and that Paley is not a credible witness.