“I believe Sarah is being scammed,” says Jennifer about her sister.

Sarah says she is madly in love with a Kenyan man who is almost 20 years younger than her and she hasn’t met in person – and she plans to divorce her husband, leave her four kids and go to Africa to marry him.

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

“This is much more than a midlife crisis,” says Jennifer, adding that this type of behavior is totally out of character for her Christian sister. "If this is the true Sarah, then I don't know my sister at all."

WATCH: Man Says Wife Of 18 Years Wants To Divorce Him For 26-Year-Old Kenyan She’s Never Met In Person

The sisters’ parents, Brenda and Jim, say they, too, fear for Sarah’s safety.

“Sarah doesn't even have a clue of what she's getting herself into if she moves to Kenya,” Brenda says.

Jim adds, “My biggest fear is that she will get on a plane, go to Africa and we’ll never see her again.”

On Friday’s episode of Dr. Phil, hear how Sarah explains her behavior. And, Dr. Phil sends a team to Kenya to look for Kevin. See what they discover. Is Kevin real? Check here to see where you can watch.

TELL DR. PHIL YOUR STORY: Is your family a stressed mess?

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