Either way of this particular episode in the murders,if there had have been communication,then they should have let Jeremy know,the same as if there hadn't been anyone alive inside,,he still should have had an explanation as to why they WASTED nearly 3 hours. Jeremy just accepted that they were " all doing their jobs ".Not good enough-----------and he wouldn't have realised this until it was too late,as so much had happened, to try and get his head around all that had happened. It's no wonder he took off abroad.
A guilty person would have hung around to keep up to speed with developments ! They're frightened of missing anything in case they haven't got a quick enough answer.