meadowgran your situation is similar to what I went through recently. I moved out and my my ex partner took our property off the market believing he could keep it for himself. He also removed jointly owned assets from our property etc and then claimed they were stolen. I tried mediation which didn't work then a friend highly recommended a solicitor who worked from home and she was wonderful. He didn't want to go to court because he knew his lies would be found out, so luckily that was avoided. Two years after I had left him he finally had to put the property back on the market, it sold quickly and I finally got my money. My solicitor didnt expect to be paid until after the settlement of the property.
I am in Australia so our laws are different here. There appears to be lots of good information and direction from the other posters. I had to do a lot of the work myself, getting an affidavit, searching for papers, going to the bank and doing more searches and getting a police report about the so called stolen property. I was so well prepared that if my solicitor asked for any information, eg bank accounts, copies of the rates, etc, I had them ready in my huge folder. I was also prepared in case it went to court. Best of luck, it will happen and be over soon. 