Johnny is going to talk about an incident he says ended the marriage when he says she or a friend defecated on his side of the bed.

Johnny is claiming that she lied when she accused him of abusing her. She wants him to pay her $100 million for defamation.

April 22, 2016 is a key date in the trial. A birthday party was being held at their downtown L.A. apartment. He says Heard was enraged when he showed up late and decided to bail. Johnny threw a wine bottle at her.

According to our sources, the housekeeper told the actor that someone had urinated on his side of the bed and then put the covers over it.

The actor believes that one of her friends is the culprit. The poop was too large for a 3 to 4 pound dog to excrete, and that's what Depp said, even though he said one of their Yorkshire terriers was the pooper.

Johnny said the pooping incident was the end of their marriage.

As you know... Johnny sued a British publication for defamation in England and lost the case, so it remains to be seen if he will get a second chance.