'The Rookie' Brings Back Nolan's Biggest Enemy in Season 7 Finale Promo

For the Season 7 finale of ABC's procedural drama The Rookie, the show brings back one of its biggest villains. Oscar (Matthew Glave) has been antagonizing John Nolan (Nathan Fillion) for years and has been lying low since he broke out of prison in Season 6. "John and Harper (Mekia Cox) work together to catch Oscar; Angela (Alyssa Diaz) investigates a bank robbery; Lucy (Melissa O'Neil) and Tim (Eric Winter) learn to adapt to her new schedule, and Miles’ (Deric Augustine) first date takes an unexpected turn," the logline for The Rookie Season 7, Episode 18, "The Good, The Bad, and The Oscar" teases. ABC released a sneak peek of the episode airing next Tuesday, May 13, previewing several arcs the season-ender will tackle, including Lucy and Tim's situation, and Oscar's comeback.