Okay, here we go (there's references to some of my Horror tools, like Dread)
The Investigation Moves
When you gather evidence, tell the MC what sort of thing you're looking for and roll+savvy. If you are investigating a PC, rol l+Hx. On a 10+, you get 2-Clue +1. On a 7-9, you get 1-clue. On a miss, you have evidence, but you can't make heads or tails of it. If your Clue is +1, you get a +1 to following any leads from that clue.
When you follow a lead, you roll +cool.
On a 10+, the MC gives you a scene where new evidence crops up, and take a +1 forward to gathering evidence. On a 7-9, the MC gives you a scene where new evidence crops up. On a miss, you have a confrontation, expose your position, or alert the quarry.
When you put the pieces together, spend your Clue Holds (up to 3) and roll +(Clues spent). On a 10+, you get 3 of the following, and take 1-Dread.
On a 7-9, you get 1 and take 2-Dread
On a miss, take 3-Dread
you learn their motives
you learn their weakness or Dread Secret
you learn where they’ll be in the near future
you learn the extent of the conspiracy or power
When you cover your tracks, roll+Dark. On a 10+, you get all 3. On a 7-9, you get 1.
you misdirect their investigation
you slow their investigation down
you make them waste precious resources
If used on a PC, on a 10+ you remove 2 clues from their pool, on a 7-9, you remove 1 clue. On a miss you have a confrontation with the PC.