The most obvious candidate for the ‘Grey Man’ has to be Tommy’s estranged cousin, Michael Gray (Finn Cole).

The pair used to be close but their relationship grew increasingly antagonistic in recent seasons as Michael’s own ambitions grew, not helped by his marriage to the ambitious Gina (Anya Taylor-Joy).

However, the final straw came when Michael’s mother Polly was killed and he blamed Tommy’s ambitions for her death at the hands of Captain Swing (Charlene McKenna) and the IRA.

Years later and their relationship remains tense, and Tommy even orchestrated Michael’s arrest for possession of opium in the US.

Polly’s prophecy clearly seemed to be in reference to the feud between Tommy and Michael and it seems that one of them won’t survive.

She previously said: “One of you will die, but which one I cannot tell.”

Speaking exclusively to RadioTimes.com, Steven Knight previously said of Tommy and Michael: “I can’t tell you [specifics about their relationship] but I’m sure you could imagine. It’s not gonna go well.

“I like the complexity of what’s happened with Michael, where he was plucked from this village, but he wanted to be plucked, he wanted to get out. And he’s become Tommy and he admires Tommy [and] wants Tommy’s approval, but he wants to kill him as well.”

Michael does not have green eyes (unless it is symbolic of his jealousy of Tommy) but his surname is ‘Gray’ and his prison jumpsuit is grey, so could he be the one who threatens Tommy’s existence? 

Sir Oswald Mosley 

Tommy’s arch-nemesis in the fifth season, fascist politician Sir Oswald Mosley (Sam Claflin) remains a major threat to the Shelbys despite doing business with Tommy.

After his failed attempt at assassinating Mosley last season, Tommy now hopes that by cutting deals with the fascists he can bring them down like his Aunt Polly would have wanted.

However, Mosley is not an easy enemy to defeat and the added addition of his calculating future wife Lady Diana Mitford (Amber Anderson) further complicates matters.

The two have even more powerful friends in the form of their “friend in Berlin”, the historical monster Adolf Hitler.

Actor Sam Claflin also has green eyes, so could the nasty fascist politician be the ‘Gray Man’ that Ruby is warning of?

Jack Nelson

BBC/Caryn Mandabach Productions Ltd./Robert Viglasky

Making his debut in the second episode of season 6, Gina Gray’s powerful uncle Jack Nelson (James Frecheville) met with Tommy in a cathedral to talk business.

Nelson imports liquor to the US has gangster ties in Boston and the ear of the US President. He also has fascist leanings and is keen to get to know politicians of a similar position.

Tommy offers him access to Mosley and also is keen to export opium and liquor to the US with him.

Thinking on the deal, Nelson will clearly be back for more but he is a powerful and dangerous individual.

Will Nelson prove to be the ‘Grey Man’? He has no green eyes and beyond a vaguely grey suit, we’ve not seen much to suggest so.

We’ll have to wait and see.

The Prussian Boy

During his discussion with Nelson in the cathedral, the pair discuss their first kills.

Tommy recalls his first kill was during the First World War in the mines and was a “Prussian boy with green eyes”.

Throughout the episode, Tommy has traumatic flashbacks to his violent encounter with the boy in the mines. 

In the visions, Tommy clashes with the Prussian boy and he is covered in grey and rubble from the mines.

Are the spectre of Tommy’s first kill and his demons from the Great War what threaten his family now? 

This may hint at another suggestion. 

Tommy Shelby himself

BBC

Could Tommy Shelby himself be the “Grey Man”?

Throughout these final episodes, Tommy has been referred to as the “devil”, including by Michael Gray.

Throughout her visions and delirium, Ruby had repeated the Romani phrase “tickna mora o’beng”.

The phrase points to demonic and deadly omens, so could this refer to Tommy himself?

Tommy clearly remains haunted by his own demons and ghosts from the past – such as the Prussian boy and even the portrait of his late wife Grace Shelby (Annabelle Wallis) looms over the final scenes.

Will Tommy be the one to bring about his own family’s destruction?

What will happen in Peaky Blinders season 6 episode 3?

BBC/Caryn Mandabach Productions Ltd./Robert Viglasky

Next week’s episode, titled ‘Gold’ sees Tommy turning to Esme to help his family.

The official plot synopsis reads: “Faced with devastating news, Tommy goes on a quest to discover who it was that placed a curse on his family.

“In Birmingham, Ada takes charge, and Arthur takes on some new recruits.”

The episode will also see Line of Duty star Stephen Graham make his debut as a new character, Hayden Stagg.

• Read More: Peaky Blinders’ star reacts to shocking episode 1 reveal
• Read More: Peaky Blinders season 6 cast: Meet the returning characters and new faces
• Read More: Peaky Blinders star on being “most hated person” after Polly twist

Peaky Blinders airs on BBC One on Sundays at 9pm and is available to catch up on iPlayer now. Check out our Drama hub for more news, interviews and features or find something to watch with our TV guide.

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