Cain Law Firm Brett Cain The Cain Law Firm is a Texas based law firm with offices in Grapevine and Granbury. We provide representation to those injured, especially due to car, truck or motorcycle accidents. The Cain Law Firm was created as an alternative to other personal injury law firms that offer only generic, factory-produced legal solutions. Integrity guides all of our actions as we work to replace what our clients have lost, making our community safer for everyone else as a result. Our attorneys have a high moral character and traditional Texas values, and by Gods grace we are good at what we do.We believe that success is only worth it when you do things the right way. Our law firm is not an injury mill. We give personal attention to each and every client who comes to uswe know who you are and what your case is about when you call. We are always down to earth, easy to talk to, and listen intently to our clients stories. When you work with us, you will have a counselor throughout the entire process and a legal advocate who truly cares about the outcome of your case.