Having killed his wife and two daughters, Chris Watts calmly returned to their Colorado home and pretended he was concerned for their whereabouts.
Worried Nickole Atkinson began to panic that her friend was not responding to calls and messages and called the police round to investigate.
Watts sickeningly put on a performance as he callously feigned concern for his family and lied to the officers. It seemed like they initially believed his story, but a body language expert claims they would have picked up immediate signals that something was wrong with his behaviour.
Looking at bodycam footage from the officers, which is seen in Netflix documentary American Murder: The Family Next Door, expert Derek Van Schaik has picked out the chilling
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