On 20 April 1972, Sellers reunited with Milligan and Harry Secombe to record "The Last Goon Show of All", which was broadcast on 5 October. In May 1973, with his third marriage failing, Sellers went to the theatre to watch Liza Minnelli perform. He became entranced with Minnelli and the couple became engaged three days later, despite Minnelli's current betrothal to Desi Arnaz, Jr., and Sellers still being married. Their relationship lasted a month before breaking up. By 1974, Sellers's friends were concerned that he was having a nervous breakdown. Directors John and Roy Boulting considered that Sellers was "a deeply troubled man, distrustful, self-absorbed, ultimately self-destructive. He was the complete contradiction." Sellers was shy and insecure when out of character. When he was invited to appear on Michael Parkinson's eponymous chat show in 1974, he withdrew the day before, explaining to Parkinson that "I just can't walk on as myself". When he was told he could come on as someone else, he appeared dressed as a member of the Gestapo. After a few lines in keeping with his assumed character, he stepped out of the role and settled down and, according to Parkinson himself, "was brilliant, giving the audience an astonishing display of his virtuosity". In 1974, Sellers again claimed to have communicated with the long-dead music hall comic Dan Leno, who advised him to return to the role of Clouseau.