Aarushi Talwar case

This case was randomly recommended by youtube and ever since that I watched multiple videos to form a theory but just couldn't stick with one due to lack of authentic information. Some sources are claiming that her father had extra marital affair while others are saying that aarushi was sexually active that night. Some sources are saying that hemraj was killed in aarushi's bedroom and then dragged to the terrace to hide his body while others are claiming that he was lured to the terrace by aarushi's dad and then killed there. There are also theroies which says hemraj's friends killed them both and also theories which says hemraj met a social worker a few days before all this claiming he feels unsafe. All I could say is there is no perfect crime. It's just the investigation was screwed from the very beginning which led the culprits to escape. It's scary that someone out there now exactly knows what happened to both of them that night with clear cut details!