From suspected ghosts to the torrid world of Shakespearian escorts, not to mention the fiendish passions and bitter rivalries of ballroom dancing, it's business as usual for the debt-laden ex-policeman and his much more credible partner-in-crime. And the pair also have demons of their own to wrestle with - Lu joins a slimming club and clashes with her sister, while Frank finds himself on the wrong side of the law accused of murder.