The Face at the Window by L. Vernon Wyrall. For the R. Amos Jones Co. touring to Royal West London Theatre. A play with this title by F. Brooke Warren was produced at Salford on 26th July 1897, and at the West London Theatre on 1st May 1899. It featured a French detective, and so may well be ?The Greatest Of All French Detective Plays? advertised here. The bottom right image shows a woman falling back at the sight of the face at the window.