Sense Sonnet - Chiller

Disconnect

A man is on a Greyound bus.
He's attacked by one with a knife.
While being stabbed in front of us,
The man is screaming for his life.
The bus comes to a sudden stop,
And all go running for outside,
Except the knifer. With a lop,
Cuts off the stabbed man's head, wild eyed.
And then the knifer cuts off skin
From the victim's beheaded head.
And with a maniacal grin,
Feeds upon his newly made dead.

Who could do this atrocity?
The police say it was me.