I'm going to set The Mystery of Three Quarters aside for now. Something about it is just not clicking with me. I've only read one of Agatha Christie's Poirot novels, and I imagine that Sophie Hannah's are probably more enjoyable if you're more familiar with the character.

It's a fun set-up, but I just can't handle the talking in circles and guessing games right now. You have to be in the right mood for this. I'm hoping to come back to it at some point.