Though I love this show, this is a poorly written episode. The sole grace is the "mystery" of who is being targeted. I guess the writer's figured it would be enough. The killer is terrible at tailing, but the girls and Bosley are worse at noticing. He is sitting out front of the office looking menacing, but these women who just heard they were being targeted for murder, don't notice him. He was literally parked 3 feet behind their car, standing by the open hood IN FRONT OF KELLY'S HOUSE, and no one batted an eye. Same bright red car, and it takes half the episode for these detectives to notice him! Really can't tell from this episode that they are very good at their job.