Meet Bill Kaiser.

He's a whiz with computers and electronics.

A demolitions expert.

A man who'll stop at nothing in his quest for social justice - and private revenge.

Is he crazy?

Psychiatric nurse Sharon Blautner needs to know.

Bill has been picked up by the police and dropped off for evaluation at New York's Bellevue Hospital.

They found him in the incinerator room of a luxury apartment building.

Naked.

With a razor that he'd used to slash himself.

Bill displays all the classic symptoms of schizophrenia.

Yet he's an extremely sympathetic patient.

Intelligent.

Cooperative.

Caring.

So much so that Sharon lets slip a secret from her own troubled past.

And inadvertently helps Bill torch his way out of the hospital's high-security lockdown.

After that, nothing in Sharon's life will ever be the same.

Bill, she realizes, was not really crazy at all.

Or at least not in the way she thought.

He's a dangerous man.

A killer.

Yet still, somehow, she can't help liking him.

And as Bill begins to carry out a mind-boggling revenge scheme - his grand plan for social justice - Sharon suddenly finds that she's the only one who can stop him.