I need to know how to file a suit for Recovery Rule in Illinois

My husband was killed in 2009,, after some patron's from the Horseshoe Casino followed him home and killed him. The trial was this year May 2013 and the evidence from their security camera's showed negligence with their security and at the trial their person of Security personnel mentioned it being suspicious to her. This video was taken as evidence and I had not seen it until this year at trial. The person who killed my husband stalked him throughout all the way until they exit the building he was sentenced 60 years without parole. After viewing this had the Horseshoe security intervened it may have had a very different out come. I need and Attorney for a Discovery Rule to sue the Horseshoe for their negligence in security. I need to know how to proceed. Janice Turner