Saturn Space Hotel: The Mystery of the Missing Plans
Our Solution

"Karen Jones," you say. "You might have done it because you wanted the machine to be free for everyone then we wouldn't pollute the air anymore and people wouldn't fall ill." You look at her.
"But, I," she stammers. Then you see her straighten herself. "I never did it, Inspector."
"It could have been you," you say, "because we have only got General Hughes' word that you were in the bar at the times when the plans were stolen." You see she is angry so you move to General Duncan Hughes. He is sitting next to Karen.