Mason Hawkins said slowly, "It means the police found out the cause of the explosion, but the couple refused to admit it, insisting that there was never any illegal and dangerous stuff in their wine cellar."
Daniel Cooper tapped his long fingers on the table, "But?"
"The key lies in this 'but'. According to the investigation, the famous model had a strange hobby of collecting various rare marine animal specimens, and those rare animals had to be frozen with liquid nitrogen to preserve them intact. Most importantly, those items were sent to her by private jets from different international big shots, making the process quite secretive."
Daniel continued his analysis, "So finding liquid nitrogen would lead to an investigation into its use, and then its source, which would in turn involve those international friends, right?"
Mason gave him a thumbs up, "Mr. Cooper, it's no wonder you were a teacher; you speak with such subtlety."
