I don't think it is one of the better Agatha Christie plays but certainly the printed set was reasonably impressive until the cast interacted with it and it rippled like water and until the two printed on light fixtures didn't get 'lit' when all the other lamps came on. The costumes were spot on for the the period by looking sadly wrinkled with wear by the time act two came along.
I thought the two detectives were the weakest performers, just sort of rambling over the stage. The brother character was very campy but I didn't feel it out of place with the period or the character. Our Em was a delight in her role, showing up some of her scene partners a little but perhaps I am biased. Letty really carried the show well and I was impressed by the depiction of Miss Marple.
I'd give it a solid 4 out of 5 community stars.