Equus, written by Peter Shaffer in 1973, tells the story of 17 year-old Alan Strang (Daniel Radcliffe), a young man who struggles with a fascination for horses that at times is both religious and sexual, and of Dr. Martin Dysart (Richard Griffiths), the psychiatrist who attempts to treat Strang when his obsession leads him to commit a terrible act.

Shaffer has said he was inspired to write the play upon learning of a young man who’d blinded a number of horses, and the play is his fictional account of the events leading up to the horrific incident. The production was originally staged in London in 1973, and later transferred to Broadway. It won a Tony Award in 1975, and was adapted to film in 1977.

Although there have been a number of revivals and school productions of Equus outside of London, 2007 marked the first official revival of the play in the West End in over thirty years. Daniel Radcliffe took on the challenging role of Alan Strang, and Richard Griffiths played the part of Dr. Martin Dysart.