Sonic the Hedgehog House of Iblis: Betrayal of the Heart

Betrayal of the Heart is the seventh chapter of the fourth series of Sonic The Hedgehog: House of Iblis, and the thirty-seventh chapter overall.
==Overview==
Sonic gets a visit from an old friend. Angel Island falls from the sky. Tails goes over the edge. Cosmo is suffering from amnesia. Blaze discovers the truth about Silver.
==Included Characters==
Sonic the Hedgehog
Sally Acorn
Knuckles the Echidna
Blaze the Cat
Silver the Hedgehog
Rouge the Bat
Miles "Tails" Prower
Cosmo the Seedrian 
Shadow the Hedgehog
Amy Rose
Doctor Eggman
==Synopsis==
Sonic, Sally, and Knuckles were trudging through the Ice Caps near the Mystic Ruins. 
"Angel Island is anchored to the Ice Caps right now. But it can be anchored to other places in the Mystic Ruins as well." Knuckles explained.
"I'll scout ahead!" Sonic yelled.
Sally sighed. "Always ready to do it to it..."
Back at Iblis House, Cosmo was talking to Shadow.
"Shadow....have you ever had any memory loss?" Cosmo asked.
"If you count not remembering anything about my past, than, yes." Shadow said.
"Oh, okay..." Cosmo said.
"Are you ready?" Rouge asked.
"Yeah." Blaze said. She was getting ready for her date with Silver.
"You look really great." Rouge said.
"Thanks." Blaze said.
Sonic was racing through the forest, when he got caught in some megamuck.
"Have no fear, Amy Rose is here!" Amy exclaimed, jumping down from a tree. She helped get Sonic out.
"Amy?!" Sonic exclaimed.
"Hey, Sonic. How ya doin'?" Amy asked.
"What are you doing here? Why didn't you come back?" Sonic exclaimed.
"You wouldn't believe me even if I told you the truth..." Amy said.
"Please. Tell me the truth." Sonic pleaded. Suddenly, a crack of a tree branch was heard.
"Stay here. I'll go check it out." Amy said. She ran off into the direction. Sonic followed her.
"What are you doing here?!" Amy exclaimed. A woman in a red coat appeared. She strated choking Amy.
"Please....don't kill me!" Amy pleaded. Suddenly, a flash of light appeared, and the two were gone.
"Amy!" Sonic yelled. "I'd better get to the Master Emerald Altar."
"Took you long enough." Knuckles said. Sonic met them at the bottom of the hill.
"Sorry. I had to deal with something." Sonic said.
"Let's go." Sally said.
"Rouge? Hey, can you pick me up? Silver never showed." Blaze said, at a cafe.
"Sure. I'll be there in ten minutes." Rouge told her.
Suddenly, someone in a black hoodie was running down the street.
"Hey! What are you doing!" Blaze yelled. She chased after him, and shot flames out of her hands. The figure in black deflected it with psychokinesis.
"Silver....?" Blaze asked. The figure in black turned around. 
"Answer me!" Blaze yelled. "Are you Silver!"
The figure took off their face mask and hood. Silver was indeed behind the mask.
"Why..." Blaze said. She slapped him. Rouge's car pulled up. Silver flew away. Blaze broke down in tears.
"Blaze, what's wrong?" Rouge asked.
"Silver....he's working with Shade...." Blaze said.
Sonic, Knuckles, and Sally finally made their way up to the Emerald Shrine. Sally gasped.
"No way...." Sonic said.
"The Master Emerald....is gone!" Knuckles exclaimed. Suddenly, Angel Island started falling.
"Ahhh!" the three yelled.
Tails was watching the news.
"This just in." the reporter said. "Angel Island has fallen from the Ice Caps. It is currently unknown if anyone was on the island, but if there were, they would likely be deceased."
"No!" Tails yelled. First Cream, now Sonic, Knuckles, and Sally! Tails thought. He ran to the cliffs on the outskirts of Soleanna. Tails jumped off the side, and tumbled down to the bottom.
Shadow was walking around the outskirts of Soleanna. He saw Tails jump, and used Chaos Control to slow time. He ran and caught Tails.
"What are you doing?!" Tails exclaimed. "All my friends are dead!" 
Shadow called Eggman. They brought him into Soleanna's Mental Institution.
"He's not crazy." Cosmo said.
"I know. He's just...going through a difficult time." Shadow replied.
Later, a woman in a red coat was walking through the Institution. She looked through the glass, but Tails couldn't see her. The woman smiled.....