Depends on what I'm reading. If it's a full length rather long mystery and there are a lot of characters...folks are gonna hate me saying this...yes, I do. I prefer to see a story unfold and understand the twists and turns without the "who dunnit" question looming. I want to experience the story and my natural quizzical mind just won't leave me in peace. If I don't "jump ahead" early on, I read too fast and miss the story itself unfolding.