In an upcoming episode of Gotham, Bruce Wayne will discover who killed his parents. Speaking to TV Guide, showrunner Bruno Heller revealed the news to the site but offered no further details. Whether the show goes with the Joe Chill canon or decides to introduce someone else as the killer of Thomas and Martha Wayne remains to be seen.
In 1989's Batman, Tim Burton actually has a young Joker kill the Waynes. Given the show's flirtation with depicting an origin story for the Clown Prince of crime, this could potentially be another avenue for the showrunners to take.
Gotham airs Mondays at 8 p.m. on Fox.