As to the double murder case against O.J. Simpson, there was so much evidence that his guilt was obvious. This evidence included, but was not limited to, blood at the crime scene and on and in Simpson's white Bronco; a bloody glove found at the crime scene and a matching glove found at Simpson's home; a knit cap, with hair that resembled that of Simpson, found at the crime scene; footprints matching Simpson's foot size found at the crime scene; blood found in Simpson's home; blood on socks found in Simpson's home; and the limo driver, scheduled to pick up Simpson on the night of the murder, buzzed Simpson's intercom and got no response.
There was other evidence, including the infamous low-speed Bronco chase, not used against Simpson. Evidence was not used either because the prosecution elected not to use it, the judge refused to allow it, or certain things, like Simpson taking and flunking a polygraph, were inadmissible.
One piece of evidence not used was testimony from a witness named Jill Shively. On the........