Kris Marshall has teased an "emotional rollercoaster" with Humphrey and Martha in Beyond Paradise.
The BBC show is back for a Christmas special and will also air a brand new series in the New Year. This time, Humphrey Goodman and his partner Martha Lloyd will foster a new child, a teenager named Aiden.
However, Kris has teased trouble ahead for the family. Kris explained that fostering is an "emotional rollercoaster" for the family, saying that Humphrey and Martha go through some challenges.
Speaking about what's to come, he said: "So far, the only foster placement Humphrey and Martha have had was a young boy called Ryan, who was cheeky, energetic, and relatively easy to look after - but that was just a short-term placement.
"Every child is different, and fostering is an emotional rollercoaster. Each placement brings its unique challenges, and Martha and Humphrey face them together. While Humphrey is supportive and involved, most of the parenting tends to fall on Martha’s shoulders. But Humphrey does find the whole fostering experience deeply rewarding."
Kris recently revealed they had already wrapped filming for the 2025 Christmas special.
"We’ve actually just finished filming Christmas 2025. So I’m actually one Christmas ahead. [We finished] literally last Friday, last week," he said on Virgin Radio UK, "Filmed the third series as well… I may have dropped a spoiler that I’m not supposed to."
Asked more about what fans can expect, he quipped: "There are murders in series three. There’s another spoiler!"
Both Kris and Sally Bretton are returning for the new series of Beyond Paradise. The Christmas special is set to air on Friday, December 27th, at 9pm on BBC One. All the regulars, including Jamie Bamber, who played Archie, are expected to return.
The synopsis for this Christmas special has revealed: "Whilst home alone watching family videos, Bob encounters a surprise visitor - his late wife’s ghost, Linda, who has a haunting demand: get out.
"When there’s a second unsettling encounter and writing on a mirror, Humphrey and the team are called in to investigate. Esther is deeply sceptical, but Humphrey is more than happy to dive into his first haunting. Surely there’s a rational explanation?"
*Beyond Paradise returns to screens this Christmas on BBC One and BBC iPlayer.