I saw a discussion for this on Reddit and wanted to start it here. What are some things in an unsolved case that are regarded as "suspicious" but you usually don't see it that way? It can be a general thing or something from a specific case. Polygraph tests are something I don't have much faith in as they can be unreliable. When LE announces that an individual refuses to take one, I don't really see it as that weird. Sure, they could be hiding something but I don't think that should be an automatic assumption. I also think people have a tendency to over-analyze a family member's public appearances. If they aren't crying enough or appear too stoic given the situation at hand. Individuals process stress and tragedy differently. The way they respond may just be a reflection of who they are and not actual evidence that they have something to hide.