Thanks for helping improve the accuracy of the site. We’ve noted what item you were on; please now visit the web page of the duplicate of production of Someone at the Door, by Campbell Christie and Dorothy Christie, Comedy Theatre, London (now Harold Pinter Theatre, London) and New Theatre (now Noël Coward Theatre), London, 29th May 1935 – 29th February 1936 and click the button that will have appeared there.

If they have the exact same name, a search for production of Someone at the Door, by Campbell Christie and Dorothy Christie, Comedy Theatre, London (now Harold Pinter Theatre, London) and New Theatre (now Noël Coward Theatre), London, 29th May 1935 – 29th February 1936 will probably help.