Peter Shaffer comedies. "The Royal Hunt of the Sun" (1964) presents the tragic conquest of Peru by the Spanish, while "Black Comedy" (1965) takes a humorous look at the antics of a group of characters feeling their way around a pitch black room — although the stage is actually flooded with light. "Equus" (1973) won Shaffer the 1975 Tony Award for Best Play as well as the New York Drama Critics' Circle Award. A journey into the mind of a seventeen-year-old stable-boy who had plunged a spike into the eyes of six horses, "Equus" ran for over 1,000 performances on Broadway. It
Equus (play) on 11 September 1976. It then opened at the Helen Hayes Theatre on 5 October 1976, ending on 2 October 1977, for a total of 1,209 performances. Shaffer adapted the play for a 1977 film starring Richard Burton, Peter Firth, Eileen Atkins, Colin Blakely, Joan Plowright, and Jenny Agutter, directed by Sidney Lumet. Unlike stage productions, where the horses are portrayed by human actors, often muscular men wearing tribal-style masks, Lumet did not believe this could adequately be done in a film version, concluding a degree of realism was required, "because the reality he [Alan] was being watched in was