Synopsis by Mark Deming
Basil Fawlty (John Cleese) and his wife Sybil (Prunella Scales) are about to celebrate their 15th wedding anniversary, and Basil is planning a party with all their friends. But Basil wants to surprise Sybil, so he pretends he doesn't know of any important date coming up. Basil's ruse fools Sybil all too well; she's certain he's forgotten and storms off shortly before the guests are due to arrive. To save face, Basil tells the assembled well-wishers that Sybil is upstairs in bed, having fallen ill; when several of them want to say hello to her, Basil must convince Polly (Connie Booth) to disguise herself as Sybil. No sooner does Polly do so than Sybil decides to come back.