Poirot will comment on a woman's hair color, then ask the player "Do you remember what the color of her hair was" in the next sentence. That is every "puzzle". Game made for babies. The story seems watered down too, being less interesting than any of the movies or original book. Go play the original 2006 game of the same name by AWE Productions games, which they removed from steam some while ago but you can find on google since its (my)abandonware.