At the beginning of the fifth season of the show, many featured several guest actors who played police officers in previous television series: James Darren from T.J. Hooker; Fred Dryer from Hunter; Martin Milner and Kent McCord from Adam 12; and Angie Dickinson. from Police Woman. McCord also starred with Dick's son - Barry Van Dyke in the short-lived Galactica 1980.
We see Dr. Slone constantly ask his detective son to put out APB's (All Points Bulletins) or BOLOs (Be On the Look Out) to bring suspects and witnesses in. When found the police just walk up to people and place them in the squad car, taking them to the station for Steve and Mark to interview even though it's pretty clear they didn't want to come. If there is no probable cause for an arrest or an active arrest warrant, the police can't make you go anywhere against your will. Once in a while, a wealthy or educated person will assert this and ask a lawyer to be present but this is rare.
These 2021 Sundance Film Festival headliners became household names thanks to some unforgettable roles early in their careers.