Kate Jackson appeared in the original version (Satan's School for Girls (1973)) as Roberta Lockhart, a college student at Salem Academy. Her real-life nemesis, Cheryl Ladd, also played a part in it. Ladd did not get along with Kate---nor later, with most of her "Angels" co-stars---and even drove Shelley Hack out of the series, at the end of season four. Coincidentally, Shannen Doherty's nemesis, Alyssa Milano, drove her out of Charmed. Both Shannen and Kate had no choice but to act "sisterly" on-screen with their diminutive, real-life antagonists.
The photos on IDs and other forms of identification for Beth/Karen are promotional stills from the first season of Charmed (1998), another Aaron Spelling production.
The car crash scene is the same one shown in season 2 on Melrose Place (1992) that involved Kimberly and Michael. This is another Aaron Spelling production.