Angelo, the man known as the Golden State killer, learned his fate today after a week of heartbreaking testimony from his victims.

But is the serial killer really as frail as he appears to be in court?

Prosecutors are now saying he's faking.

It is the Golden State killer faking that frail old man appearance.

All this week, we've seen 74 year old Joseph DeAngelo confined to a wheelchair.

He sat disheveled and showed zero emotion as he listened to all those heartbreaking victim impact statements as woman after woman bravely faced him down.

He's a selfish, sadistic, calculating, cruel, pathetic pieces come.

Michelle Cruz, whose sister Genelle was slain by D.

Angelo in 1986 says his lack of reaction left her frustrated.

Didn't matter what I said.

I don't think I got a reaction out of him.

He just sat there and stared out.

Now prosecutors say D'Angelo is faking it.

Sacramento District Attorney Anne Marie Schubert just released this video, showing the monster springing up on a table in his cell to fix a light.

Here he's exercising, and here he's wiping the floor with a rag under his shoe.

Somebody said There's a method to his madness on I Think Mr D'Angelo's, They're calculating and cutting and doing whatever he can, whatever's in his own best interest.

None of this comes as a surprise to D'Angelo's former fiance, Bonnie Old Sin, who memorably stared him down in court earlier this week.

I think he's been acting for 60 years.

Today's hearing was held at a ballroom at Cal State Sacramento when participants were asked to bow their heads in memory of his victims.

DeAngelo kept staring straight ahead.

He finally stood up, removed his mask on spoke.

This is the first time we've heard him utter a word since his arrest two years ago.

I've listened all your eight minutes, each one of them, and I'm really sorry, everyone, ever.

He was sentenced to life for his 13 year campaign of 50 rapes and 13 murders.

De Angelo string of crimes began back in 1975 and lasted for 11 years.