I have to admit, I believe OJ killed them. BUT, there were several things that gave me reasonable doubt. From testimony and evidence I truly believe the cops played with the blood to enhance their case. I also think the glove was a throw down. In addition, the pilot who asked to see his Super Bowl ring on his trip from LA to NY and the photographer who sat beside him both testified, definitively, there was no cut on his hand. I am not sure I would have been able to convict him. The cops and prosecution lost this case.
At the civil trial, much was made of the Bruno Magli shoes. It later came to light that Bruno Magli was a designer and not a manufacturer. The soles were made by Silga Gomma and the manufacturer sold them to twenty companies. That sort of destroys the shoeprints as evidence of O.J.'s presence at the crime scene.