Casualty's Max Walker will be crossing over to Holby City for a special storyline due to air later in the year.
Jamie Davis has reprised his role as popular porter Max, who bowed out of Casualty in January 2018.
Max will reappear in Holby City for one episode airing in December, although further details regarding what brings him back are currently under wraps.
However, Digital Spy understands that Max's return will just be in Holby City and there are no current plans for him to pop back to Casualty as well.
Max was last seen leaving Holby for a new life in America with his wife Zoe Hanna. Sunetra Sarker had bowed out as Zoe in 2016 but reprised her role for Max's exit, in order to give the on-off couple a happy ending.
Max's Holby comeback is part of new producer Jane Wallbank's commitment to increased crossovers between the shows.
Speaking to Digital Spy recently, Jane said: "The recent Casualty/Holby crossover was a huge achievement and everyone worked so hard. It's probably not viable to do anything on that scale for a few years yet, simply because of logistics.
"But there is increased and more complex character crossover between the two shows on quite a regular basis now."
Prior to his Casualty exit last year, Jamie had played Max since 2013.
Digital Spy