Defenseless

 Defenseless is a 1991 legal thriller film directed by Martin Campbell and produced by Renée Missel and David Bombek.
Plot summary.
Lawyer T.K. represents Steven Seldes, who claims that he is innocent of involvement in making underage porn movies. He is also her lover, so when she meets his wife things are awkward for her - he didn't say he was married and his wife, Ellie, turns out to be an old student friend. Next day she confronts him at his office and a fight ensues in which she injures him. When she returns later on, she finds Steven is dead, and has been stabbed 18 times. 
Upon finding Ellie's sweater on the crime scene, the Police arrest her for the murder, and T.K. agrees to defend her.
Home media.
"Defenseless" was released on VHS by Live Home Video and around the same time in Canada by Cineplex Odeon. A TV edit of the film was released on DVD in 2002 by Platinum Disc. A widescreen unedited DVD was released in Japan by Universal Studios Home Entertainment, under license from StudioCanal, in 2007.