The episode begins with a vicar, the Reverend Frank Simpson giving a sermon to a half full congregation, one of whom is Dr. Anne Tarrant who begins to notice how the man is starting to ramble, and become incoherent. He looks drunk. He comes from the pulpit and starts to wander around... By the time he collapses, a party of school children are being escorted out by their teacher. Anne asks for an ambulance, watched by the vicar's concerned wife... (thetvdb.com)