From Samuel French:

A Broadway hit first produced in London under the title Gaslight and filmed twice, Angel Street tells the story of the Manninghams who live on Angel Street in the 19th Century. When the curtain rises, all appears to be peaceful. It is soon apparent that Mr. Manningham, a suavely sinister and handsome man, is slowly torturing his gentle, devoted wife Bella, into insanity under the guise of kindness. While he is out, Mrs. Manningham has an unexpected caller: amiable, paternal Inspector Rough from Scotland Yard. Rough is convinced that Manningham is a maniacal criminal wanted for a murder committed fifteen years earlier in this very house. Gradually the hearty and understanding Rough restores Mrs. Manningham's confidence in herself and they build up evidence against Manningham, managing this exciting and fascinating task shrewdly but not succeeding until the author has built up and sustained some of the most brilliant suspense in the modern theatre. The secret of the dimming gaslight and the mystery of the hidden rubies will captivate all.

"Infinite craft and dexterity.... Comes off the top part of the theatre's top shelf." N.Y. Times.