You are right! I designed the rules to be 4 cards: Fact, Evidence, actor, alibi, but as the thing iterated I found "motive" an interesting new card. So I forgot to update the description. I have iterated on my notes getting all the wonderful feedback and there are more types of cards. Of course I will improve the UX and provide a hint system (it was planned, but really no time). The are some rules missing: detective + evidence is the one that got you stuck. In particular: Detective + piano photo. I usually see detectives looking at the photos when thinking about how to solve the case. That generates "questions" that you can ask actors and keep getting leads.
I also found myself thinking how to make the detective card special. I simply thought of making it all white / blue.
I got impressed you found the bank confirmation, you are one of the first that I see reached that deep to the check Camila Alibi. Have not seen many ppl thought, but congratulations!
It is in my plan to make a commercial version of this game, so I will update a version with many more improvements.
Thanks a lot for all your feedback, I did write it all.