Conclude 1 Samuel 28: Saul's spiritual condition is revealed in his desire to seek insight through a medium rather than the Lord; also, a rare occasion in Scripture when someone (Samuel) who has died appears again in this life.
Begin 1 Samuel 29: David is caught between a rock and a hard place: does he fight for the Philistines (Israel's sworn enemy) against Saul (God's anointed, who is trying to kill him); or does he double-cross the Philistines (who have provided peace and protection from Saul) in order to fight for Israel (to once again be in Saul's cross-hairs)? Watch God solve the dilemma.