Both are accused of killing their landlord Joseph Morrisey, 46, a Nova Southeastern University professor after a rent dispute.
Just before midnight on April 6, an armed intruder broke into the Morrissey's Plantation home, forcing the couple to drive them to an ATM to withdraw $500, a Plantation police report said.
The robber or robbers tied the couple up, stabbed Morrissey, then set the house on fire, the report stated, but while his wife Linda, and the couple's 5-year-old son escaped he was found dead on the back porch, police said.
Prosecutors claim they planned revenge on the placid academic after he tried to evict the 44-year-old Tundidor Sr.
But with both of them facing the death penalty if convicted on on first-degree murder charges it seems that blood isn't thicker than water, after all and like a rat jumping from a sinking ship the son has turned on the father.
As a result of his plea deal, he will avoid the death penalty his attorney Patrick Rastatter told NBC Miami.
He added: "Why should he go to prison for the rest of his life for the sins of his father?"
On Thursday, Tundidor Jr. changed his plea from not guilty and now awaits sentencing, which won't occur until after his father's trial, Rastatter said.