Tara Duncan
Thanks for that.
One final point before we devolve back into biological humour...
There is still value to be had in the original post. Listen to the simple questioning methods, and the answers, taking into consideration that most people are not accustomed to holding up under even the most rudimentary questions, and there is a natural unease at being informed your conversation is recorded.
In any situation where you want to establish facts you should be able to drill down to the basic information. If the person you are questioning is telling the truth they should be able to answer. If they are accomplished liars you have another issue altogether.
Were the facts of the situation established? Does the chronology ring true? Do you have sufficient information to determine what actually transpired? Or are you being manipulated at the emotional level? That would be for you to decide.