Agatha Christie's The Murder at the Vicarage
I recently watched the first few seasons of the Miss Marple mysteries on Hulu (then they recast the charming actress playing Marple and I stopped), which made me curious to read the source material. And even though I already knew the solution to this mystery, I found this to be an engaging read. I was a little bit surprised that it's not narrated by Marple herself, but by the titular vicar--though I can see how that would work better with a character like Marple--everyone gets to be surprised and amazed at her revelations! Either way, it's pretty funny and has great plotting. A-.