Sam Smith has just dropped the video for new single I’m Not The Only One, an amazing tale of betrayal and revenge, played out by Glee’s Dianna Agron and The Mindy Project’s Chris Messina.

Taking to Twitter, Sam wrote, "So excited to share this with you all! I hope you enjoy x".

Set for release on August 31st,I’m Not The Only One is taken from Sam's multi-platinum selling album In The Lonely Hour, which debuted at number one in the UK charts.

Directed by Luke Monaghan, who also worked on Sam's Leave Your Lover video, the promo was filmed in LA and sees Dianna play the scorned wife of cheatingMessina.

Out for revenge, she sets his clothes on fire in their garden, all while he's with another woman.

[related]Earlier this week, Guardians Of The Galaxy actor Vin Diesel covered Sam's number one hit, Stay With Me.

"First of all I thought it was going to be good, because I just thought if it's Vin Diesel singing it must be great," said Sam, after hearing the rendition.

"But when I heard it, it was the most hilarious thing I've ever heard in my life. It's amazing. It's brilliant. The falsetto and the chest voice is just unreal."

"I definitely think we should do a duet one day… It'd be amazing [laughs]."

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