I am thinking outside the box here with puzzle shape like a person which mean in your business dealing with a case is like dealing with puzzle that you try to solve and most of them involving a person / suspect , hope you like my concept, feedback is always welcomed and needed.
This is initial design only, i can improve it if you like my initial design and limit the color as you requested .
R with jigsaw puzzle and question mark, this is more personal approach because i include the company initial on the logo. Thanks feedback is always welcomed and needed.