Groundbreaking, one assumes, at the time of its 1966 Royal Shakespeare Company premiere, this two-hander from Charles Dyer (who died at the start of this year, age 92) is best seen as a theatrical curiosity. Written a year prior to the decriminalisation of homosexuality in England, Dyer's two-hander feels in Tricia Thorns' production like something of a precursor to Vicious, the British sitcom that locked Derek Jacobi and Ian McKellen as an elderly couple locked in a cycle of perpetual...