What is hidden in 3D image?

Taking his seat in his chambers, the judge faced the opposing lawyers.

"So," he said, "I have been presented, by both of you, with a bribe."

Both lawyers squirmed uncomfortably.

"You, attorney Leon, gave me $15,000. And you, attorney Campos, gave me $10,000."

The judge reached into his pocket and pulled out a check. He handed it to Leon. "Now then, I'm returning $5,000, and we're going to decide this case solely on its merits!"