You have only one ultimate responsibility–to find, document, and present the ‘true facts’ of the case. Don’t bend your case to fit your theories of what ‘should’ happen.
The day I started applying my private investigator manual to my love life, everything changed. How many times have you watched CSI and seen a great cop get burned because he decides early on that a suspect is ‘his guy’? His focus on catching his man makes him blind to the evidence presented later.
I’ve done the same thing so many times in dating. I would focus on my ‘suspect’ on the first date, and then cherry-pick ridiculous evidence (like a generic text that was probably sent on the toilet) to prove my case: That he’s The One. Now I’ve learned to Follow The Evidence. Is he calling when he says he will? Introducing me to his friends? Have I seen his house?
And all the crazy wrong turns, dead end leads, and unusual suspects become worth it when you find the right person! 🙂