Nancy Drew: #22 Trail of the Twister

"Trail of the Twister is the 22nd installment in the Nancy Drew PC series by Her Interactive. It is based on the 155th Nancy Drew novel The Mystery in Tornado Alley. Nancy travels to Oklahoma to investigate a mysterious string of accidents as the Canute storm-chasing team competes for a $100,000,000 prize." Source: Wikipedia, "Trail of the Twister", available under the CC-BY-SA License.