Some weeks after Siskel and Ebert had reviewed the movie on their show, they returned to the movie to address complaints of those who unable to recognize the face of the killer in the last scene, so they gave their viewers time to turn down the sound and then explained who the killer was.
During the final court day scene, Teddy Barnes' clothes change. This is because this scene was originally shot as two separate days, but were later edited into one final court day.
After the verdict, Jack is talking to the press. Teddy leaves the court and walks behind the gathering of press. When Teddy gets home and views the press footage, she is not visible in the footage, furthermore, several extras are who weren't in the original shot.
Although several people claim to have seen an alternate ending for this movie by the time it was released in cinemas, back in 1985, there's no actual prove that the studio shot or released any ending different from the one we saw in the picture.
Also, writer Joe Eszterhas said in his book that he fought to keep the original ending, the one that shows Jack Forrester as the killer. According to some viewers, in the alternate ending, the tennis pro Bobby Slade is the killer and Jack Forrester is the one who comes later to rescue Teddy, instead of Sam.
It's possible that some viewers got confused and mixed the characters faces, creating this "urban legend".
Q
What does the title refer to?
A
The title "Jagged Edge" refers to a murder weapon, a hunting knife with a blade that has a serrated (or jagged) edge.