Why do you question the importance of Caroline questioning who was in the room when the silencer was found -it's highly pertinent and part of the case- when you devote a thread to asking if Jeremy smuggled heroin which has nothing to do with the case.
Why is it important who was actually in the room. Only Caroline asks this question, and has never said why despite requests. And you didn't either in you're post, just said it's highly pertinent.
Whether Jeremy smuggled heroin relates to the case. He either lied, and didn't, showing he lies. Or he did smuggle heroin, showing he would take huge risks for money.