Thanks Legally. I know it's not a discussion thread but I'm hoping an exception can be made for this. Because if Mark wrote the note to satisfy Carrie's curiosity about the alarm, then that is evidence-tempering/witness-tampering (I can't find the right word but I hope you get the gist) and that seems to be quite vital evidence of his involvement and also of his deceptive character. Yet I haven't heard that it was brought up in his trial. I suppose he must have destroyed it when he realised how stupid it was, being as it was in conflict with what Bonnie already knew.