Marcy and Todd say their mom, Renee, has fallen in love with a catfish.
 
“'Thomas’ promised my mom that he will sweep her off her feet. They’re going to vacation and travel the world together,” Marcy says.
 

“This gentleman by the name of ‘Tom’ has taken over her life,” Todd adds. “He has promised to come here, marry her, give her the wedding of her dreams.” 

TELL DR. PHIL YOUR STORY: Know someone with outrageous behavior?

The siblings say they’ve been told “Tom” is worth millions of dollars but is stuck in Africa, and every time he tries to leave, something prevents him. And, they claim Renee, who is currently married to her husband of 35 years, Harold, has given “Tom” thousands of dollars and has been left broke – but when they’ve tried to tell her, she doesn’t listen and has even told them they are “dead to her.”
 
“For three years now, my mom has been scammed,” says Marcy, who disinvited her mom to her wedding.
 
Todd says, “She just doesn’t get it.”

WATCH: 71-Year-Old Says She’s Trying To Help Online Boyfriend Worth Millions And Stuck In Africa To ‘Come Home’
 
Why do Marcy and Todd say they believe their mom continues to engage in a relationship with “Tom”? Watch more in the video above.
 
On Wednesday’s episode of Dr. Phil, hear what Renee says about her relationship. And, what will a Dr. Phil investigation reveal about “Tom”? Check here to see where you can watch.