Murder takes precise planning, if it is to be carried out successfully. Even more attention to detail is necessary, if you want to get away with it- that's exactly what Ruby, Riley and Reece were able to do. I would tell you exactly how many times, but that's another aspect of getting away with murder, you can't let incriminating facts escape your inner circle and if they do, you simply have to block the means for those facts to spread. Interpret my words as you will and take caution not to get too engrossed within the workings of a murders mind, because you just might find yourself on a dangerous path of discovery, of the things your subconscious is truly capable of.