It is the abnormal behavior of parents that is making them suspects. If any normal person finds his/her dear one in danger or death, the first reaction will be call for help and trauma. Trauma does not force a person to behave in a contradictory manner. Why were they waiting till their maid arrived? The house was well connected by phones, they could have called police for help or an ambulance for help. A dear ones' death will force a person to hope against hope. Here probably they are trying to create a scene of grieving parents in front of their maid - this behavior itself is indicative to something. Everyday parents version is different as evident in media. They may not be in a position to give any statement, but here they were very comfortable giving statements and without realizing their prior statement they give another statement which conflicts with the former. It is well known first lie is followed by series of lies to cover up the other.
