Complete story — includes the ending
Dexter and Debra plant evidence to steer LaGuerta and Matthews' investigation away from Dexter. The plant works on Matthews, who tells LaGuerta she needs to recognize Doakes as the Bay Harbor Butcher and quits the case. LaGuerta is still not convinced. Meanwhile, Hector Estrada (Nestor Serrano), the last surviving killer of Dexter's mother, is unexpectedly released on parole. Dexter begins plotting to kill him. Batista decides it's time to retire to run his restaurant. Debra meets with Arlene Schram (Nicole LaLiberte), a witness to one of Hannah's early murders, and asks her to testify against Hannah. After Arlene tells Hannah about this, Debra has a car accident, and Dexter realizes that Hannah had drugged her. Dexter attempts to kill Estrada, but discovers that he's been set up by LaGuerta who had pressured the parole board to release Hector early. Dexter barely escapes but so does Hector, who now knows who Dexter is. Dexter decides to give Debra evidence incriminating Hannah for Sal Price's murder, resulting in Hannah's arrest.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Dexter season 7. HTML formatting and reference markers removed. · Content license