wonder how many of u encounter this: u start with one 2 suspects, one is the client. so theres only one suspect you can ask for more suspects. That ONE AND ONLY suspect clamped. That's the FIRST question i ask not alibi or anything just the motive of other suspects and it clamped. so i had no choice but to quit.
You might also work on your equipment, the beret is doing you no good, unless you are using Charming skills. Do you have advanced interigation? That will increase your odds of being able to interigate successfully.