EMMERDALE viewers are convinced that Rhona Goskirk will be the one to kill Graham Foster in a shock twist.
The former soldier - who is played by actor Andrew Scarborough in the ITV soap - is murdered this week but fans are predicting a bombshell that will reveal his girlfriend Rhona killed him.
The new theory claims Rhona was so desperate to leave the village for a new life in France that she swapped the hairs she stole from Millie Tate before they were DNA tested.
This was to ensure Graham couldn't be revealed as the girl's father and wouldn't have any reason to stay.
Fans think he will discover this and it will lead to a row when Rhona will accidentally kill him.
One wrote: "OK, I'M CALLING IT!! - Rhona switched the hairs.. she didn't really get one of Millie's for the DNA test.
"Graham has found out .. they have an altercation and she accidentally murders him! it's gonna be someone you least expect!! #emmerdale #whokilledgraham @emmerdale"
A second said: "That was my theory as well I thought it was Rhona."
Another added: "Rhona is the killer then...#Emmerdale #WhoKilledGraham"
Last night viewers saw the first glimpse of Graham's body after someone killed him but it has yet to be revealed who will do the deed.
Next week Rhona will seem heartbroken and horrified when Graham's body is discovered.
The vet is left in utter shock to hear that it’s now a murder investigation, but eventually calms down to tell the police everything about Graham’s movements before his death.