Heavy rain perfect crime help?

Ok, I just did the scene where you have to clean all the fingerprints and I did. I still had to go to the station though. I went in and touched absolutely nothing that I didn't need to touch in order to finish the scene. I cleaned the bottle, both shot gles, the magnifying gl, both phones the ballerina and the front door. What did I miss? I'm almost positive I didn't touch anything else.