Mel Gibson's dad, Hutton Gibson, cited irreconcilable differences in filing for divorce from Teddy Joye Gibson, but there could be something more sinister at work.
Hutton, who is 93 and suffering from a host of health problems, believes his wife has been abusing him, and Mel has jumped to his dad's aid, according to reports.
Mel and his family have been tending to the patriarch, but Teddy Joye (who is in her 70's) says they are prolonging his suffering and wants them to back off.
She wants to discontinue all medicines to accelerate his death, because she believes that's what Hutton wants. Mel wants Joye out of his dad's house - STAT.
The actor is trying to make sure his dad gets his medication, and feels Joye is guilty of elder abuse by her conduct. He's reportedly willing to go to court over it.
The animosity between Mel's family and Joye is intense, and Hutton personally filed for divorce and even signed the divorce documents in shaky handwriting.
Hutton had no kids with Teddy, whom he married in 2002, but had 11 kids with his first wife, Anne, who is deceased. He has more than 50 grandchildren.
The 93-year-old Hutton is asking for spousal support ... and attorney's fees.