Jack Cassidy was 17 years old when he was selected to be a contestant on "The Voice." He was in his element and convinced he could win it all.

But when Jack was cut from the contest, his dreams were dashed, and his life was soon hanging in the balance.

"I did one line that night that was—that was too much," says Jack Cassidy. "And I felt my whole body start to shut down and go cold. And my heart started uncontrollably pounding out of my chest."

Jack Cassidy is the grandson of actress Shirley Jones. He grew up in a musical family with his dad Patrick, and his uncles, former teen idols David and Shaun Cassidy.

"Growing up in the Cassidy's was interesting. It was . . . definitely its own unique experience," says Jack. "My parents tried to keep me very grounded and really instilled what wa

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