Gilligan's Island S01 E13 Three Million Dollars More or Less

"A three-hour tour"

Mr. Howell loses $3 million to Gilligan in a golfing contest. Mr. Howell then tricks Gilligan into trading for a worthless oil well that he owns. When the radio announces that the oil well is a gusher, Mr. Howell sets his sights on winning it back. However, just as he succeeds in winning it back, the radio announces that the gusher was a mistake!