The upcoming season finale of Young Sheldon teases a huge deal, as former stars of The Big Bang Theory Jim Parsons and Mayim Bialik return once more to grace the screen in their roles as Sheldon Cooper and Amy Farrah Fowler. The production team is keeping other details of their appearances in "Young Sheldon" on Thursday, May 16, under wraps.

If it happens, it will mark the first time that such characters will be seeing each other in person since the May 2019 "The Big Bang Theory" series finale. "Young Sheldon" is the coming-of-age story of a young boy genius, Sheldon, and his family's very normal efforts to find their own way in a world that is rapidly turning toward church and football.

The series has an ensemble cast with Iain Armitage, Zoe Perry, Lance Barber, Annie Potts, Montana Jordan, and Raegan Revord, with Young Sheldon’s Big T as Josh, Wonder Revord as Emily, and Jim Billed as TV's number-one comedy. Since its premiere, "Prospective" has drawn huge popularity, in particular as the top comedy that followed "The Big Bang Theory."

The series has executive producers Chuck Lorre, Steven Molaro, Steve Holland, Nick Bakay, Jim Parsons, and Todd Spiewak for Chuck Lorre Productions in association with Warner Bros. Television.

Their success begot another opportunity: a spinoff featuring "Young Sheldon" characters George (Montana Jordan) and Mandy (Emily Osment) as they navigate the world of Texas, parenthood, and marriage.

The multi-camera project was conceived by Lorre, Molaro, and Holland and is yet another barometer of the continuing vitality and enlarging scope of the "Big Bang" universe as it rolls out a much-expanded story arc tracking Sheldon's journey from boy to man, played by Parsons and Armitage.