An Impossible Silence - S1-E11
Continuity mistake: When Catherine enters the precinct station, the desk sergeant places a small white file box on the counter. There's nothing else sitting next to this, but when the shot reverses, a tall black police radio with an antenna sticking up has appeared there. (00:16:10)
Continuity mistake: In the pilot episode, at the end of the car chase, officer Tom Hanson's weapon changes from a Police Special (.38 or .45) to a .357 Magnum.