When Ethan is rushed into hospital with a fever, his hallucinations take him back in time to 2016, where he will see some familiar faces from the past as he deals with deep personal trauma.
Meanwhile, in the present day we’ll meet newcomers Teddy (Milo Clarke), an enthusiastic young paramedic, and new consultant Stevie (Elinor Lawless), who series producer Loretta Preece promises will become “one of the most talked about characters in Casualty’s history”.
Here’s everything you need to know about the former Casualty characters rejoining the cast for the special 35th anniversary episode.
Which characters are returning to Casualty for the special?
Series producer Loretta Preece has promised fans a big, surprise-filled special full of Casualty’s signature twists and turns.
“There is a 35th-anniversary smorgasbord to offer both new and old fans of Casualty with huge stunts, faces from the past, some indelible new characters and some wonderful story twists,” Preece said.
“Elinor Lawless as new consultant Stevie makes a splash right from her first episode and I am confident she will become one of the most talked about characters in Casualty’s history.”
There are three former characters confirmed to be returning for the anniversary episode, two of which are coming back from the dead for the special.
Cal, played by Richard Winsor, was stabbed to death by Scott Ellisson in 2017 and Noel, played by Tony Marshall, died in the show’s BAFTA award winning coronavirus episode.
On his feelings about returning to the show, Marshall said: “It was strange to come back but rewarding at the same time as the episode tackles yet another important subject.
“We had to abide by Covid restrictions which is not easy but we did it. The audience are going to love the episode!”
Charles Dale will also return as Big Mac, a character that was last seen in the ED in 2016 when he was forced to leave after admitting to stealing medicine from the hospital.
What time is the Casualty 35th anniversary episode?
Casualty was first broadcast on September 6, 1986, and has gone on to rack up over 1,200 episodes, becoming the longest-running primetime medical drama in the world.
The Casualty 35th anniversary special will air on BBC One tonight at 8.45pm. Don’t worry if you miss it, as it will also be available to stream on BBC iPlayer.