appraisal fraud

I purchased a home from a client based upon an appraisal that was done by my client from an appraisal firm. I never seen the appraisal, but it was to be transferred to my bank for my loan in my name. We closed on the home without an inspection, because we trusted that the appraisal was correct, to find that the home was more or less condemned, the tennant of my clients was using the home as a dog kennel, inside, and breeding and raising ponys in the basement. The home was more or less destroyed, had lots of mold and damage issues, no running water or septic service, that was not addressed by the appraiser. In our investigation we found that the original appraisal was altered before it transferred to us, and did not state any of the problems that were listed on the original. We live in Missouri, have the doctored first appraisal and the second appraisal to prove the fraud and malpractice, but because of conflicts of interest with most attorneys, because the spouse of the appraisal company is an attorney and over the title company, cannot find one to represent. We are into this house over 530K, any suggestions on how we sue without an attorney, since we cannot find one.