The Guinea Pig is a 3 Act play by Warren Chetham-Strode. The work premiered on London's West End at the Criterion Theatre in 1946 and starred Rachel Gurney as Lynne Hartley. An immense success, the play was soon adapted into a 1948 film starring Richard Attenborough and Sheila Sim.
References
The Guinea Pig (Chetham-Strode) Wikipedia(Text) CC BY-SA