So my theory is that the killer has to be Michael ( not the arch angel ) because of many reasons, one of them is that he didn't get a parcel delivered to his house, he tries to frame Richard but Richard is in a choma and Louisa changed her address recently *a few weeks ago* only an awake person would know this michael for an instance is an awake person knows every part of the family and is aware that Louisa has changed her address recently, he has the motive obviously he wants the money but he lacks the skill and money to make a bomb then comes the liberal John Brame's turn he has a motive as well he could win the position if Louisa were to dissappear michael and John would both benefit from the situation so our dearest michael goes to John for help financially and skillwise because he lacks both, another thing that caught my attention was that michael works in a supermarket tying a lot of knots and and making a lot of packages,Michael then tries to throw a curveball to the cops making them think that it was Richard since he has a history with cops *crashing into a cop car* and he has the skill to make a bomb, he has served the navy which makes him more than qualified to be our killer but he is not since he has been in a choma for a while. So there's my conclusion please tell me i got something right