I believe the original theory offered was that Bonnet and West, between them, if you please, made the decision to withhold, from JB, the information that his father had already called them, in case it was decided, at a later date, to prosecute JB!!!. It occurs to me, that if all the -what can they be called, other than deliberate lies- "myths" emerging from the case were erased, there would, more likely, be a much more obvious case for guilt.