The vintage artwork just adds so much pizazz to the great Agatha Christie's stories. I wish they'd keep on doing the covers this way, rather than trying to go all cool, calm and understated. I've got a bunch of old paperback covers (mostly Agatha Christie) I've collected over the years, hoping, eventually to make some sort of collage with them. (One of these days it will get done!) Over the years, the paperbacks they belonged to crumbled apart, but I salvaged the covers. They are so much fun to look at. (I don't have the ones showing above, but mine, I think, are just as clever and just as much fun.)
NOTE: Here's the BEST website to go to if you want to see all sorts of vintage book covers.- mostly mysteries and thrillers. They do a remarkable job of scanning and categorizing the vintage covers and styles many of us remember with a great deal of affection. It's quite an undertaking they've got going on at The BookScans Database. Go check it out, you'll be amazed.