In the fourth-season finale, Sookie taps into Bon Temps' spiritual past on Samhain, a Wiccan festival, for help in her battle with Marnie's latest incarnation. Meanwhile, Lafayette's recent medium encounter spells trouble for his relationship with Jesus; Terry has a surprise visitor at Merlotte's; Alcide makes a romantic proclamation; Debbie has a confrontation with Tara and Sookie; and Nan's authority has its limits after all.