MUMBAI: Superstar singer Celine Dion will make a special guest appearance on the special 90-minute season finale of US broadcaster NBC's reality show Deal or No Deal.

The show raises the stakes as the top prize money increases from one to five million dollars on 5 June. During the finale high school guidance counselor Casey Bell of Temecula, California is the lucky contestant. She will be surprised with a chance to become a millionaire five times over when the new stakes are revealed. Does she have the nerves of steel needed when she is confronted with life-altering financial decisions in a highly pressured environment?

She gets a little help from her family, friends and a surprise guest when she serenades the banker with a song by her all-time favorite musical artist, Celine Dion. Dion joins Bell's support team live via satellite from Las Vegas and helps Bell during crucial decision making moments when host Howie Mandel asks the all-important question, "deal, or no deal?"

A Deal or No Deal aficionado, Dion watches the show with her family. She says, "Around our house, Deal or No Deal rules! My son Rene-Charles is a very enthusiastic 'at home' contestant, and my husband and I are right there with him! It was a thrill for me to participate and give encouragement to the contestant on the show."

Hosted by Howie Mandel Deal or No Deal sees contestants play for a large cash prize in a high-energy match of nerves, instincts and raw intuition. Each night, the game of odds and chance unfolds when a contestant faces 26 sealed briefcases containing anything from a penny to one million dollars. Without knowing the amount in each briefcase, the contestant picks one -- his to keep, if he chooses, until its unsealing at game's end.