The Riddle of the Sphinx (Inside No. 9) was characterised by Pemberton as a thriller in the style of Anthony Shaffer's 1970 play "Sleuth", while Shearsmith identified the episode as particularly theatrical, in the style of "Sleuth" and Ira Levin's 1978 play "Deathtrap". BBC executives, according to Shearsmith, saw the episode as a cross between "Sleuth" and Willy Russell's 1980 play "Educating Rita" that read as if it had been authored by psychopaths. The executive producer Jon Plowman suggested that the first half of the episode plays out like a radio play. The word-play and tea-drinking in this part of the episode are, in the writers' opinion, very
Shirley Valentine (film) Costas joining her in the water. She realises that she doesn't want Costas to keep his promise. They kiss and later on the boat have very intense sex. On her return, Jane believes that Shirley has fallen in love with Costas, but Shirley reveals to the camera that she's fallen in love with the idea of living. She spends more time with Costas, and at the airport turns back, and walks to Costas's tavern to find him attempting to seduce another tourist the same way. Costas is shocked to see Shirley after her departure, but she says she wants a