To launch my 6th grade mystery unit, I started by reading a Sherlock Holmes short story to get my students used to the genre before launching our whole class novel. Included in this product is the text (also easily found on the internet) and a powerpoint presentation including text-dependent questions.
While these questions could simply be used for student comprehension packets, I used them as in-class questions for written answers, or group discussions. As was our routine for novel-study, at the beginning of class, I had students "set up their notebooks for Sherlock Holmes." Students would divide their notebook page into four quadrants, waiting for the questions to come up as we listened to the audiobook (available at audible.com). Each question comes up individually through the powerpoint animation settings. My students, from the Washington Heights neighborhood of New York City, were not grade-level readers, but were definitely grade-level thinkers. This presentation format was a great way to ensure rigor, while scaffolding for my inner-city students' needs.