Dexter targets a dope dealer who is also in the sights of ADA Miguel Prado; Internal Affairs puts pressure on Debra.
Miami cops are tasked with finding the killer of the assistant D.A.'s younger brother; Dexter and Rita move closer to making a decision about their family.
Dexter encounters a fellow predator; a murder is pinned on Freebo, but Dexter knows the truth; Dexter struggles with a growing friendship with Miguel.
Dexter tries to convince Rita that his proposal is sincere; Miguel's brother desperately searches for Oscar's murderer.
Dexter tracks a murderous husband to Bimini; Rita has a medical emergency.
Dexter tests Miguel; Rita loses her job and wonders if she is meant to have a successful career.
Dexter and Miguel have differences in selecting a new victim; Rita discovers that Miguel's wife has suspicions; an old friend asks for Dexter's help.
Dexter tries to teach Miguel the "code"; Debra is closer to finding the skinner.
Dexter and Miguel's friendship is strained; Rita wants to confront Miguel; Debra searches furiously for Anton.
Dexter and Miguel compete for the upper hand; Miguel presents Rita with a lavish gift; Debra questions her relationship with Anton.
Dexter needs to find a way to get rid of Miguel; Rita discovers that Miguel has been seeing someone else; Debra finds a clue to the Skinner's identity.