The faux multi-millionaire's right hand man – who is played by actor Andrew Scarborough in the ITV – broke down in devastated tears after killing Joe as Kim had demanded.
But in a shocking twist, he let Cain Dingle believe he had been the one to kill Joe when he punched him and knocked him out cold.
It was later revealed that Joe survived Cain's punch, with his fingers moving when Graham loaded his body into the boot of the car.
Later Graham had an uncharacteristic emotional outburst after dispensing of Joe and burying his body.
He was forced to kill Joe after Kim threatened to get another hitman, Vincent to dispense of him – even knowing that Vincent would torture Joe before killing him.
Unable to let that happen to the man he thought of as a son, Graham prepared to finish Joe off himself.
Instead Cain got there first and punched him into a rock, which knocked him out and gave Graham the perfect opportunity to frame someone else for the killing if he needed to.
Joe returned to the village after rejecting Graham's offer of £100k and a new life.
He returned wanting to marry Debbie Dingle, but instead Debbie believes he jilted her at the altar and is utterly devastated.
However, with Cain believing he murdered his potential son in law, will he be able to keep the secret?
Or could Graham crack under the pressure of murdering the only other person he cared about other than evil Kim?
And with Kim set to leave the village after this week, will Graham flee with her?
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