In a promotional trailer for the upcoming episodes, Makarem's character is seen clashing with Holby ED's Dylan Keogh as he is forced to prove his worth in the hospital.
He is seen saying to Dylan: "I'm not a terrible doctor!
Former Emmerdale star Rik Makarem stars in the teaser as he joins the hit BBC One Show as doctor Sebastian Grayling.
The 34-year-old actor is best known for playing Nikhil Sharma in the Dales but left the soap in February of this year.
I could be brilliant."Highlights of the new series also include Connie's struggle over her daughter, who was injured in the recent helicopter crash, a will-they wont-they romance between Charlie and Duffy and the introduction of David's son.
Speaking about picking up the role again he said: "With fresh energy and wisdom from playing other characters, I'm over the moon to be re-investing in Nikhil.""Emmerdale is fantastic at character driven stories and for any actor, this is massively rewarding," he added.It was particularly unfortunate for Connie's daughter, Grace, who had just survived a car crash, only to be hit by the drone whilst receiving treatment in the helicopter.Last week's episode featured another soap favourite, Pam St Clement (aka Eastenders' Pat Butcher), who appeared as a sassy Irish patient.Casualty ran a 30th anniversary special last month which featured a spectacularly explosive stunt with a helicopter.During the episode a drone collided with the air ambulance, which fell from the sky and crashed into the hospital.