4x17 Time Heals (1)

Inside every great show is a 22- to 60-minute story that stays with you forever

https://www.rollingstone.com/tv-movies/tv-movie-lists/best-tv-episodes-of-all-time-1235090945/

This is a list of the "Law & Order" and "Chicago" franchises, which frequently crossover with each other, as well as other TV shows and movies they crossover with, or at least share the same universe.