On the last episode of "Marvel's Ultimate Spider-Man vs. The Sinister Six," things shook up when it was revealed that Scarlet Spider was in fact a spy for Doctor Octopus -- which doesn't mean good news for Spidey.

Disney XD has provided CBR News with an exclusive clip, and new images, from this Sunday's episode that sees an unexpected visit from Doctor Octopus and the first-ever face-off between Scarlet Spider and Spider-Man.

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In the episode, Doc Ock learns that the key to a device that will retrieve Hydra Island is at Aunt May's house. When Doc Ock (literally) crashes the house, Spidey is left to not only stop the scientist and his plans to destroy the Triskelion, but also a double-crossing Scarlet Spider.

Check out the clip and images below:

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The next episode of "Marvel's Ultimate Spider-Man vs. The Sinister Six" airs Sunday, June 19 at 9/8c on Disney XD.