Peaky Blinders season 6: Finn Shelby’s death revealed as Arthur Shelby drops fearful hint

Finn then proceeded to tell Billy the whole plan, which it seemed was then relayed to someone who wanted the fascist Mosely to stay alive. 

As a result, Tommy’s plan was scuppered and at the end of the episode, he was most definitely desperate to find out who was responsible. 

Now, fans have spotted a tiny clue in the series which suggests poor Finn will pay the deadly price for his actions. 

Earlier in the finale, Arthur Shelby (Paul Anderson) warned Finn about getting too close to a dodgy accountant.