Who Wanted Howard Pilmar Dead?

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(upbeat music) - Hi Al. It's like a quarter to 10. And so I will wondering if he was still at work. Give me a call. Let me know what time you're gonna be home. Talk to you later. Bye. Love ya. - We were in Arizona when I got a phone call on a Friday morning. March 22nd, 1996 to tell me that Howard was a victim of a homicide. - I was in complete disbelief. No, I can't be, you know what I mean? Murdered. - It was very violent. - It was slaughtered. - He was stabbed over 40 times. It had to be somebody who he knew that hated him so much. - Who could have done this to Howard? Who would wanna kill my son? How could I tell you about Howard? With me, the son rose and set with Howard. He couldn't do anything wrong. - Howard was full of energy. He was good-looking. He loved to dress and go out. He was married to Roslyn and they had a child, Philip, who was the love of his life. - Howard worked for you, right? - Oh, sure. - We had an office supply and stationary business. He made me look like a vinyl vegan, as far as being a entrepreneur. He was thought this little coffee thing, you know? A store. - Starbucks before Starbucks was Starbucks. - That's right. I said, people in New York are not gonna be walking around the street with coffee cups. Shows you how smart I was, but he was a little bit smarter. - Here's Howard's idea. He missed you so very, very much. - Howard, please. - They never found a weapon, and they never had a witness. - I call the police practically every day. I wouldn't give up.
Transcription truncated.
The wife of a NYC businessman is suspected of murdering him with help from her brother -- why would she want him dead and why did it take more than two decades to crack the case? "48 Hours" correspondent Richard Schlesinger reports.