9. The false suspect
8. The cover up
7. The flight
6. The actual killing
5. The first irretrievable step
4. The opportunity
3. The plan
What is the murderer’s ladder without a wrap-up?
The object of missing clues and loose threads may have been resolved earlier. This makes things (including the reader’s experience of reading) predestined.
As such, we have a predictable murderer. There was never a mystery about who the murderer is, and the reader probably even knows the murderer’s complete ladder, instead of discovering the murderer at rung 5 or 6.