Another Agatha Christie novel adapted for radio, this time as a five-parter (2.5 hours): The Moving Finger, in which a friend calls Miss Marple in after a spate of poison-pen letters results in a death. Judging by the reviews on Amazon, in the novel Miss Marple doesn’t show up until fairly late; the play restructures matters so it starts with her arrival, and she gets a recap from the novel’s point-of-view character. This worked fine for me, but may be distracting for those who read the novel first.
This is a nicely psychological mystery, and while I guessed whodunnit fairly early (I may be getting used to the way that Miss Marple, or perhaps Agatha Christie, thinks), I found it generally satisfactory. The romantic subplot at the end was decidedly not to my taste, but at least it was over quickly.