'Westworld' has been hinting at Sunday's big twist all season long — here's every clue we spotted

HBO

Warning: Major spoilers ahead for "Westworld."

The seventh episode of “Westworld” ended with a brutal scene involving the murder of Theresa Cullen and the major reveal that Bernard had been a host all along.

During an interview with INSIDER, Jeffrey Wright (Bernard) revealed the key reason why he knew very early on about his character’s robot existence.

“There are narrative moments, obviously, in which we drop breadcrumbs,” Wright told INSIDER. “So it was necessary that I be aware of that."

We've gone back through all the episodes aired so far and rounded up every possible breadcrumb — big or small — that was given to the audience about Bernard's true identity.

Scroll down for a look.

The very first scene between Bernard and Ford took place in cold storage.

Ford was speaking with a host named Old Bill when Bernard walked up behind them. Ford used voice commands to freeze the host and put him back on the shelf. 

Ford said: "You'll put yourself away again, won't you Bill?"

Remember this phrase — because it led to clues later on.

Also in the pilot, Bernard whispered something the audience couldn't hear to Peter Abernathy.

This was a strange moment which has still never been explained. But in retrospect, knowing that Bernard is a host, this might have been an early nod to viewers that Bernard had a closer-than-normal relationship with the hosts. 

Whatever he said to Peter Abernathy caused him to cry as he walked into the cold storage room. 

In the second episode, it was revealed that Theresa and Bernard are having an affair and she said something very suspicious to him.

Theresa joked about how Bernard usually loves silences, even though "his creations never stop talking," even when they're not near actual people. 

"They're always trying to error correct, make themselves more human," he explained. "When they talk to each other, it's a way of practicing."

"Is that what you're doing now?" she asks. "Practicing?"

Though her line was meant as a joke, it was really one of the first clues given to the audience about Bernard's true nature. Bernard also seemed slightly troubled by the question. He frowned as she laid her head down on his chest.