This a quick and easy mystery, good for a lazy afternoon but lacks depth. A woman on bedrest watches out the window and sees a woman in a green raincoat walk her dog across the street every day. When she doesn't show up, the woman is determined to find out what happened. The plot was a little far-fetched and I found myself not caring what happened. Lippman is a great writer- I loved I'd Know You Anywhere. This novella is not her best.