First off, this is amazing! I'm glad you enjoyed the game enough to want to do this, so thank you!
So, what I mean by that is if the detective is still trying to solve the case, but has had bad rolls (all 1's on the dice), then the consequences begin to appear. Let's say, they're on the first day of the case and they've rolled three 1's. Now the media will release details about the story that the detective wouldn't want out. They're on the next day of the case, and have more bad luck (three more 1's on the dice), now the killer is aware that the detective is looking for them (you can decide what the killer does with this information in the background). If you get to eight absolute failures, and still haven't figured out who the murderer is, then the murderer comes after you. This will likely be the only instance where combat happens in the game, and you would just roll the physical skill and narrate the scenario.
Please let me know if this still doesn't make sense, or if you have any other questions.
Thanks!