stab somebody in the back

Without a word, the boy stabbed him in the back.

He turned to her as if she had just stabbed him in the back.

"It is as if I never got stabbed in the back."

This was where his wife stabbed him in the back.

It was as if he stabbed me in the back.

He turned to acting after being stabbed in the back at age 20 during a fight.

He took their money and stabbed me in the back.

Has someone on my own side stabbed me in the back?

He's obviously being stabbed in the back by his own side.

No, it's all because the good guys were stabbed in the back.