That depends on the type of accident you were involved in. For example, if you were injured in a motor vehicle wreck, then the at-fault party could likely be the Texas Department of Transportation, the driver who struck you, or a manufacturer of the vehicles that were a part of the collision. Or, if you were in a slip-and-fall accident and sustained a head injury, the liable party will nearly always be the property owner. Your attorney will need to investigate the cause of your accident to ascertain which parties contributed to your injuries so that they can be brought to justice when you pursue your civil lawsuit.