I am sorry for the confusing situation that has been foisted upon you. Take a breath and realize that there is little that you can do until you are able to talk to those who are or were involved in your purchase â€“ your Realtor, the title company and the law firm of your late attorney. There is little help that we can provide on this forum since we do not have the complete details of your transaction. In addition, the advice that you are seeking is legal advice in nature and most of the folks on this forum are not attorneys.
I would call the title company and see what they have to say. I would also consult a real estate attorney who can look over the title policy and all closing documents to advise you as to what your legal options are if the title company refuses to cover your loss, based on the fact that your attorney, at the time, is now deceased and did not advise you of the tax liens on the property. Was there anyone else with you during your closing?