Where parties enter into a settlement agreement based on a unilateral, not mutual, mistake, that mistake alone is insufficient to warrant a rescinding of the agreement. The Illinois Appellate Court, 1st District, 2nd Division, affirmed a decision by Cook County Associate Judge Randye A. Kogan. On Jan. 27, 2012, Greta Berecz was visiting a Wal-Mart store when she slipped and fell on some broken veneer flooring. On March 13, 2012, Berecz signed an agreement with the Shea Law Group for representation to prosecute Wal …