First, install it by running this command in KoLmafia's graphical CLI:
git checkout https://github.com/Ezandora/Detective-Solver.git
Once it's installed, go to the Scripts menu, then select "Detective Solver.ash"
To update the script itself, run this command in the graphical CLI:
git update
Solves all three cases for the eleventh precinct IOTM in minimal time.