Here’s a blast from the past which die-hard Fringe fans will appreciate: Jared Harris, aka. David Robert Jones, has been spotted on the set!

TV Line broke the news today, linking an image from the set which shows Jared Harris:

Jared Harris last appeared as David Robert Jones in the season 1 finale, ‘There’s More Than One Of Everything.’ His character died, ripped in half in between the two universes, but of course without Peter, that wouldn’t have happened.

Harris has previously stated that he was disappointed to see his character killed off, and would like to see Jones explore his issues with his parents. Maybe he’ll get his wish!

For the fans, it’s just one more small difference to delight and excite. But what does it all mean?