Chuck Moll (1970)

A gang of robbers sets a diversionary fire in a madhouse as part of their plot to steal a gold shipment. Four inmates escape together. One of them, an amnesiac, hopes to find out who he is and where he comes from. One of the robbers reveals his name, Chuck Mool, and other clues lead him and his fellow escapees to his hometown. There Chuck is reintroduced to his family. But then, maybe it's not his family.