“The Mirror Crack’d From Side to Side” by Agatha Christie

A glamorous movie star moves to St Mary Mead (into Colonel and Mrs Bantry's old house, no less!) and the village is starstruck. But on the day of a charity fete hosted at Gossington Hall, a local woman is poisoned--and rumor has it, the poison was meant for Marina Gregg. 

Well, you're never going to believe this. I guessed the truth of the matter on page 98 (out of 280). I wasn’t sure, but I guessed, and I was right. I wrote it down and everything, and I did not waver (well, I may be slightly exaggerating there). 

I Guessed The Solution! What does this mean? There are several possibilities. 1. I’m getting good at this. 2. This was one of Christie’s less clever books. 3. I’ve read this book before and subconsciously remembered the solution. 4. Some combination of the three. 

I guess I will never know which.