03-07-2011, 08:24 PM
purely speculation on my part..if in fact the killers brought the tape, but not the bags, that says to me they only planned on binding the victims while they tore up the house looking for the alleged "safe". and when things got out of control, they used the bags they found in the house to kill them. i never, and you can look back to the beginning, thought that they came with the intent to murder.