He'd have looked a bit sick if the police had barged straight into the farmhouse with Jeremy in tow the minute that they'd arrived,would he not ? After having " just murdered all his family? Would Jeremy have been aware that that might have happened ?
There were all kinds of situations that Jeremy seemed oblivious to,but he wasn't unduly panicking in any way,nor appeared uncomfortable,as it's been said many times that he was cool,calm and collected. Which doesn't tell me that he'd just allegedly murdered all his family,and that he wasn't found to be insane,etc.