william k. the king of the osage. he was the master mind behind the plot. bill hail had come from texas to be a rancher in the late 19th century. leasing grazing lands from the osage. he had become one of the wealthiest non-natives in town and recruited his nephew to join him. the plan was kill everyone off and he would get everything. basically he infiltrated his wife s family. that s exactly what he did. infiltrated and married in. he had children. but he also committed this horrific murder plot. so they could have head rights. and money. by 1926 the fbi had gathered enough evidence to arrest william hail. and earnest. for the murder of molly s sister. what i tell you at osages had