Complex sentence: In September 1936 she played the leading role in the play "Laura Garnett", by Leslie and Sewell Stokes, at the Arts Theatre Club, London and played the lead role of the victim in Agatha Christie's 1945 play "Appointment with Death".
Split into simpler sentences: In September 1936 she played the leading role in the play "Laura Garnett", by Leslie and Sewell Stokes, at the Arts Theatre Club, London. In the theatre, she played the lead role of the victim in Agatha Christie's 1945 play "Appointment with Death".