Larry King and Sister-in-Law Deny Affair

Larry King and sister-in-law Shannon Engemann are denying reports that they are romantically involved. At the same time, King's soon-to-be ex-wife Shawn Southwick is denying allegations of her own of infidelity. INSIDE EDITION reports.

Shannon Engemann is Larry King's sister-in-law and she finds herself at the center of King's divorce scandal.  

Engemann is the look-alike younger sister of King's wife Shawn Southwick.

She's an actress and model. She has had bit parts in a string of b-movies, including, Message in a Cell Phone. And the one and only review on the box cover of her film Pool Hall Junkies is written by Larry King! His review said: "Walken and Palminteri are dynamite!"

Shannon lives in a modest townhouse near Salt Lake City. INSIDE EDITION has learned that she used to work as King's personal makeup artist at CNN.

King is said to have showered his sister-in-law with gifts, including a $160,000 car. But both she and King have denied having an affair.

King's wife is facing her own allegations of infidelity and is denying reports that she had a relationship with her kids' baseball coach, aspiring actor Hector Penate.

INSIDE EDITION caught up with him working out at an outdoor gym in West Hollywood. He was tight-lipped about the break-up of King's marriage.

"I can't talk about that right now," he said.

The hunky actor has a few small parts to his credit, including an appearance on The King of Queens.

The sister and the coach are two normal people thrown into the spotlight by a messy high-profile divorce.