Viewers of the latest season of Hudson & Rex will notice one key detail throughout the episodes: John Reardon, who plays Charlie Hudson, isn't in many of them.
The plot of season 7 explains Reardon's absence by sending Hudson on a mission to find his brother, while his team, alongside the ever-loyal Rex, solve mysteries. However the titular detective's search never appears on screen, which has left many fans wondering what happened.
During the production of season 7, John Reardon was diagnosed with tonsil cancer. So, even though he filmed a few episodes for the new season, production swiftly made plans to write him out for the rest while he recovered.
In February of this year, Reardon returned to Instagram with an announcement that he is now cancer free. Some much needed good news.
"It was hard not to be there with them while they continued to make the show great! I am happy to say though that I am cancer free and have been cleared to go back to work in full capacity! Feeling strong and very appreciative.
"I am overwhelmed by the response I’ve had from fans around the world saying how important the show is to them and the well wishes. The show has truly been the dedication of my last 7 years as well as my family’s who continue to support me in the endeavor to bring you more shows."
Will John Reardon be returning in season 8?
While season 7 does end on a very open cliffhanger, there has been no official announcement that John Reardon will be returning.
In an announcement trailer for season 8, Luke Roberts (who plays Charlie's brother Mark Hudson) is shown with Rex, hinting to a possible change of lead actor.
Some fans have speculated that there may be a potential return of John Reardon that's been kept under wraps, but any such claims are yet to be proven true.

Hudson & Rex season 7
What happened to Rex?
Unfortunately Diesel, who played our good friend and all-around good boy Rex for so many years, passed away during the filming of season 7.
In some uplifting news, the role of Rex has now gone to Diesel's nephews, Dillon and Dante, as well as his cousin Dreamer. It's a beautiful way to keep the legendary role in the family.
Hudson & Rex season 7 is now streaming on SBS On Demand. Episodes air weekly at SBS VICELAND starting Sunday 28 September at 10.30pm.
Hudson & Rex seasons 1-6 are also currently available on SBS On Demand.
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Hudson & Rex