Double and triple cross

I was working for an organization and planning to steal a large amount of money from them.  I had to put the money in a safe every night before I left.  The money was in a large brown bag and I did not check it.  The next day the manager brought me in and accused me of stealing the money.  He had the whole thing on tape where I took the money out after putting it in.  The tape clearly showed me taking the bag of money out of the safe.  I told them I had to take the bag out to double check that it was OK.  I noticed in the video there was a gap in the recording of 15 minutes.  That was when I figured out my manager was trying to steal the money and frame me by manipulating the video.  There was a detective there and he said they would have to drop all the charges because of the gap in the surveillance video.  I knew than that I had gotten away with the money because the bag I put in the safe was really a bag full of newspapers and I had switched the money earlier that day.  The detective told me he knew I did it but could not prove it.  He knew because I looked different in the video than real life.