S5·E8 Smelling of Roses

As Henry mysteriously loses his sense of smell he is intrigued when Fisher seems obsessed with arresting tyre exporter Peter Watson and suspects that Fisher, about to divorce his wife, is having an affair with Mrs. Watson. In fact she has discovered that her husband is defrauding her charity and is using Fisher to trap him. Having seen the case through Henry, feeling used by Fisher to catch Watson, resigns from the police and immediately regains his sense of smell. With Gary turning down the offer of work at another kitchen, Henry and his staff and colleagues have every reason to drink to the continuing success of Pie in the Sky.