I am fairly new to the Wh40K universe, having played Warhammer 40K a couple of times and read a little in the universe of 40K. I have roleplayed for many years. My group likes a mix of combat, roleplaying and mystery solving. Most are in their 20's and 30's. We are, if anything, a little light on combat and heavy on roleplaying. They are all fairly experienced gamers too. I want to get off to a good start and pull them into the 40K universe and get them excited about the game. None of them have any more experience with 40K universe than myself.
Now, finally to the question: Based on the above information, which introductory adventure would you recommend and what order would you go from there. Eventually I will be making my own adventures but time constraints at the moment prevent me from doing so now.