Officer must demonstrate he acted in "good faith" to benefit from governmental immunity for false arrest

Catherine Simmons took $29,000.00 she obtained by refinancing her home to Greektown Casino to gamble.  She was suspected of money-laundering and Steven Ford, a State Police officer, detained her for several hours and held her cash.  She provided Ford with proof of the source of the cash and recovered her money two days later, and then sued Ford and Greektown for false arrest.  Ford argued that he was entitled to summary disposition based on immunity because there was probable cause to arrest Simmons.  The trial court found no probable cause for the arrest and Ford appealed.  The Court of Appeals sent the case back for a new hearing, pointing out that the question was not whether probable cause for arrest existed, but rather whether Ford had provided sufficient evidence that he believed in good faith that probable cause existed.