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This is the fourth reality-TV-related incident on which BetWWTS.com has suspended wagering because of unusual betting patterns. Last year, CBS's "Survivor: Pearl Islands" winner Sandra Diaz-Twine received numerous wagers from Vancouver, British Columbia, before the first episode even aired. Similar incidents occurred during "Survivor: The Amazon" and the second installment of ABC's "The Bachelor."

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Red flags were raised at the Antigua-based BetWWTS.com when a maximum bet of $300 was placed on two candidates: lawyer Jennifer Massey, 30, from San Francisco and software executive Kelly Perdew, 37, from Carlsbad, Calif. The next day, Doyle witnessed a number of New Hampshire accounts that bet the limit on those two contestants. 'When we see a lot of bets with $300 then that's very suspicious,' said Doyle, who noted typical bets are about $25.

Before the betting was suspended, consulting firm owner Elizabeth Jarosz, 31, led the pack with 5-to-1 odds, investment firm partner Pamela Day, 32, had 7-to-1 odds and marketing director John Willenborg, 24, had 8-to-1 odds to win.