Here's what to know about 'Bridget Jones: Mad About the Boy,' as Renée Zellweger and Hugh Grant are set to return for fourth film but not Colin Firth

Zellweger is reprising her role as the chaotic titular character, Bridget Jones.

Grant, who was absent in the third movie, "Bridget Jones's Baby," is returning as Jones' womanizing, cheating ex Daniel Cleaver. Although Cleaver was nearly killed off at the beginning of the third film in a plane crash, he survives his near-death experience.

The final returning actor is Emma Thompson, reprising her role as Jones' obstetrician-gynecologist, Dr. Rawlings, from the third film.

Deadline reported that Leo Woodall and Chiwetel Ejiofor, who both have rom-com experience, will also appear in the movie, but the roles have not been revealed.

Woodall was recently praised for his performance in the hit 2024 Netflix rom-com series "One Day," while, Ejiofor starred in the 2003 Christmas classic "Love Actually."

It is unclear if Patrick Dempsey, who played Jones' love interest in "Bridget Jones's Baby," will appear in the fourth film.

As fans will remember, "Bridget Jones's Baby" ends with Jones marrying Mark Darcy (Colin Firth) and raising their son, Billy.

But in the third book, "Bridget Jones: Mad About the Boy," the relationship ends in tragedy. The book starts four years after Darcy was killed by a landmine in Sudan while helping aid workers.

Jones is left to raise their two children — Darcy and Jones have a second child in the book series called Mabel — and face the world of dating again.

There has been no confirmation that the upcoming movie will follow this exact storyline, but Firth's absence suggests that the film is going in that direction.

In the third book, Jones is in her 50s and grappling with online dating, Twitter, and sexting.

There are also two new male characters, including a hot 29-year-old who Jones dates. It's possible that Woodall, who is 27, may have been cast as this character — although some fans believe he could be play Jones' son.

There's also Billy's rugged PE teacher, Mr. Wallaker, who catches Jones in embarrassing situations, just like Darcy in the first "Bridget Jones" movie. In 2013, Fielding told USA Today Mr. Wallaker looked like Daniel Craig but was inspired by a real-life teacher named Andrew Wallaker. It's possible that Ejiofor could be playing this role.

Cleaver (Grant) doesn't appear in the book at all, but the makers could choose to weave him in as a third romantic interest. Cleaver and Jones now can relate to each other, after Cleaver's near-death experience and Jones' loss.