(Spoilers below for The Mentalist; tune "Big Bad John" by Jimmy Dean and Roy Acuff)

He was a serial killer in Californ-i-ay

And Patrick Jane was sworn to put him away

His style of murder was bloody and base

And every time he painted up a big smiley face,

Red John.

His followers loved him with fanatical zeal

They believed in his powers, swore they were real

They believed he was fighting for a holy cause

And died in his service without question or pause,

Red John.

Red John, Red John--

Red Red John.

The Blake Association was his principal game

Their word was "Tiger, tiger," and they felt no shame.

They were cops and lawyers, they called the shots,

And on their left shoulders they wore three dots

For Red John.

But Jane insulted him on live TV

And Red John's revenge was as dire as could be

Which drove Jane to hunt down Red John and his friends

That only goes to show that revenge never ends,

Red John.

 Red John, Red John--

Red Red John.

The suspects list went from seven to five

Those being the only ones that were still alive

Jane called them all together to face their doom

And was just about to do it when the house went BOOM

For Red John.

At the end of the line, John pled for his life

And Jane said "Are you sorry you killed my wife?"

Red John blinked twice because he had no breath

And Jane said "Good," and that was the death

Of Red John.

 Red John, Red John--

Dead Red John.

Well, then Jane was a killer who got off scot free

Which has to make you wonder 'bout society

When is murder right, and when is mercy wrong?

That's too big a question to fit in this song

Of Red John.

But I sometimes think, as I watch the show

About all the many things we'll never know.

What was he thinking? What was his plan?

Or was he just a deeply twisted, evil man?

Red John.

Red John, Red John--

Dead Red John.