This testimony tainted the trial, the Pennsylvania Supreme Court said, even though the lower appeals court had found it appropriate to show a pattern of behavior.

The court ultimately did not address the admissibility of the five additional accusers because it had overturned the ruling based on the agreement with a former prosecutor that prevented Cosby from being criminally charged in the case.

I had only heard about the agreement. Now I wonder if they reneged on the deal on purpose to shield themselves later from this testimony trick, which reminds me of the prejudicial testimony which locked up Ross Ulbricht.