Did you catch Chicago PD on Wednesday. It was nice to have the show back on the air replacing that mini-series from Sochi, Russia. Officially, this C.P.D. was Episode Six entitled Conventions. It was about a series of rape/murders that began in New York on Law & Order: Special Victims Unit, and now apparently had resurfaced in Chicago. Hence the crossover episode to Chicago PD. As you know, both shows are Dick Wolf productions.
On ‘the advice of his Commander’, Voight brought in a couple of detectives from the New York Special Victims Unit. Basically, Fin who is played by Ice-T and Rollins who is played by Kelli Giddish, made the crossover appearance. Their stay would be open-ended at least until the perp was caught.
That’s your set up.
What impressed me most about the episode wasn’t the stellar police work. It wasn’t the crossover aspect either. Nor was it the great performances by the series regulars. Instead of those, I was most impressed by the fact that the writers sat down and did make some changes to the story lines on Chicago PD that were getting stale.

Sgt. Platt and Officer Burgess
1) Officer Burgess and Desk Sgt. Platt – I’ve watched week after week as Platt threw her rank , experience, and age around and did her best to make Burgess and her fellow officer Atwater feel miserable. Yes, they made mistakes, but Platt overstepped more than a few times. Atwater did not appear in this episode.
This week, Burgess (played wonderfully by Marina Squerciati) took some time off from her patrol after telling the dour Platt (played by Amy Morton) that she would be out for a while on official business. She then came back with the information (actually a photo) that led to the case getting solved. After which, she got a compliment from Voight, and then when Platt made another snide remark, Burgess let it sail by, and wished the Sgt. a pleasant evening as she left.
2) Ruzek and Olinsky. For almost every one of the first five chapters, Ruzek (played by Patrick John Flueger) would make a mistake because he was impulsive, because he didn’t think things through, and because he didn’t play the situations according to the book. The consequences were that Olinsky, the veteran undercover played by Elias Koteas, was always pissed at him.