The Psychiatrist is the 12th episode in the series.

Plot synopsis

Martin reluctantly accompanies Ann to Paul's drinks party, where he is critical of everything and confides his criticisms to fellow guest psychiatrist Dave Wilson. Dave agrees with Ann that Martin's obsessions and neuroses mark him out as a suitable patient but Martin, who believes himself to be perfect, wrongly assumes that Dave agrees with him that it is Ann who needs treatment. He is not pleased when he discovers the truth.