In The Rookie episode " Control ," Officer Nolan's compassion for a relapsed confidential informant, Bianca, complications an investigation into a major drug deal, forcing a dangerous undercover operation. Meanwhile, Officer Harper goes undercover as a buyer, leading to a shootout and rescue after Bianca interferes, with the team successfully resolving the case and handling personal subplots. You can watch the full episode and find detailed recaps on TV Fanatic and IMDb . The Rookie Season 2 Episode 17 Recap: Control - TV Fanatic