“At Bertram’s Hotel” by Agatha Christie

Bertram's Hotel is tucked away in a quiet corner of London. It's so utterly proper and demurely luxurious, beautifully restored, with impeccable service and upstanding elderly clientele. It's like a time capsule, preserved from the memories of youth, and there isn't anywhere else like it. But, really, how could it be so perfect? 

That's what Jane Marple begins to wonder as she observes her fellow guests and the staff serving them. And when Canon Pennyfather disappears, Miss Marple once again has a mystery on her hands (though, surprisingly, not a murder--yet!)

At first, the main question is whether Bertram's Hotel (and its cast of characters) is exactly what it seems. It becomes more serious when death makes an appearance. 

I had a guess as to the truth about Bertram's Hotel on page 120. I was partially right but mostly wrong. I corrected my guess on 142 (out of 265) and was right. I also managed to guess correctly about the identity of the eventual murderer!