Denise Richards is once again remembering her late friend and frequent costar Patrick Muldoon following his tragic death. "Pat & I were supposed to do press this week for Dirty Hands," she wrote via Instagram on Thursday, April 23, alongside a clip from new crime thriller Dirty Hands, which is due for release on Friday, April 24. Richards, 55, continued, "He was so passionate about this movie & worked so hard on it. He was personally close to many involved. We did our first movie together & I am so blessed & grateful I did his last movie with him.