'Blindspot': Sullivan Stapleton on Weller Facing His Demons and Final Season Goodbyes (Exclusive)

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Warning: This story contains spoilers from Thursday's episode of Blindspot.

After five seasons away, Blindspot star Sullivan Stapleton is back home in Australia. But Stapleton acknowledged the trying times the world is currently facing amid the coronavirus pandemic and continued fight against racial injustice and police brutality. 

"There's a lot [going on]," Stapleton told ET by phone earlier this week. "I'm glad to see that things are changing. I wish they had changed a long time ago. And I hope with what's going on that people actually start to learn and listen and do things that need to be done... I hope we get to a better place and do what needs to be done."

While the 42-year-old actor has been in quarantine Down Under as the final season of Blindspot has unfurled, he's been keeping his mind active by watching lighter fare -- or as he puts it, "shows that make me laugh." 

"Being quarantined in isolation I was watching shows that made me happier, like Schitt's Creek," Stapleton said, before expressing gratitude for his time on Blindspot. "I'm very thankful for my five years on the show. ... I hope that it brings [fans] some joy. It's much needed right now."

And Thursday's episode, titled "Brain Games," is a major hour for Stapleton's Kurt Weller, who is kidnapped by Ivy Sands and injected with a hallucinogenic with the hopes he'll give up the whereabouts for a wounded Jane, Tasha, Rich Dotcom and Patterson. He attempts to withstand some of its effects, only giving up one minor detail about a bunker.

"That was kind of a funny way to go to work every day. You get up, you're bright-eyed and bushy-tailed, you go to work, you're strapped into a chair and start crying or hallucinating or just going through the gambit of the motions of interrogation and the toll it takes on you," Stapleton recalled. "We weren't always chasing criminals and getting into fights and stunts and explosions. They could take the characters this way. To be able to go through those emotions and really work on the craft, I was very thankful for that."

During his hallucinations, Weller faces ghosts from his past -- Jane's former handler and ex-fiancé, Oscar (Francois Arnaud), and his dad, Bill Weller (Jay O. Sanders), who confessed to killing Taylor Shaw.