There was a man of the hill-country of Ephraim, whose name was Micah.
In the successive judgeships of Gideon, Jephthah and Samson, the progressive deterioration of the institution of the judgeship itself became painfully evident, and the author of Judges concluded the narrative by registering two special events, both of which occurred DURING the period of the Judges, as his concluding argument that Israel had to have a king in order to survive.  Those two events were: (1) the apostasy and migration of Dan, and (2) the horrible outrage at Gibeah.      Samuel wrote Judges near the end of his life in the early and popular period of King Saul's reign, because, at first, Samuel opposed the institution of the monarchy, and therefore, Judges must have been written AFTER the change had occurred and at a time when it APPEARED to be successful.