There has been several murders going around in your town, the significant ones being Knuckles and Shadow, Knuckles had appeared to die from a "freak battery malfunction", and Shadow appeared to have had his air-shoes sabotaged, causing them to explode and kill him.

When you were wandering the town you heard yelling, it seemed to have come from the forest, specifically the hangar Tails resided in. You peered in to hear the conversation, being unnoticed.

Amy: there he is!

Tails: he jumped, he was startled he had been caught in the act

Sonic: Angry and betrayed Why...

Tails: turning around from rigging Amy's hammer with a bomb, it was bait to catch him in the act, he was surprised to be caught, but he didn't mind it was from his "best friend". A psychotic look plastered on his face WHY!? HAHAHAHA! THEY WERE IMPOSTORS SONIC! THEY DIDN'T LOVE YOU, I LOVED YOU! YOU THINK THEY WERE YOUR " FRIENDS"? I WAS YOUR BEST FRIEND SONIC! DON'T YOU GET IT? SONIC'S BEST FRIEND IS TAILS! ME...

Amy: pleading Tails, please! Just give yourself up! You need help!

Sonic: furious You have never once, ever could be, or ever WILL BE my friend! EVER! You sick. Twisted. FUCK!

Tails: snapping, A calmer but somehow even crazier look on his face that's it... I get it now... If Tails is Sonic's best friend... And i'm NOT YOUR BEST FRIEND.

Sonic: oh no...

Tails: THEN YOU!

AREN'T!

SONIC!

he tried to throw the rigged hammer at them, hoping it'll explode on impact and kill them, but it missed and hit the tree you were behind.