Dexter uses lessons he learned from Brother Sam to follow up on some new leads in the Doomsday investigation; Debra butts heads with Captain LaGuerta over the case of a…

Fresh out of jail, Isaak renews his pursuit of Dexter while Quinn continues his power struggle with the Koshkas. Dexter tries to keep Debra in the dark about his relationship…

A series of chess-like moves ensues when Dexter and Miguel vie for the upper hand, with Miguel winning Rita’s affection by presenting her with a lavish wedding gift. Elsewhere, Debra…