About Us Turn to Perkins & O’Neill if you need reliable legal guidance in the Thayer, MO area. Call us today if you need to: Develop a plan for your estate Probate a loved one’s will Fight criminal charges Separate from your spouse Adopt a child We’ll meet with you to discuss your situation and determine the best course of action. Call us to arrange a free consultation with a criminal defense attorney or family attorney in Thayer, Missouri.