List of Dexter characters
On a visit to his sister, Dexter and Debra both feel as if they have been drugged; just before he passes out, Dexter sees Hannah standing over him. When he later regains consciousness, Dexter begins investigating Hannah, and finds that she has changed her name and married Miles Foster (Julian Sands), a wealthy businessman. Dexter goes to see Hannah, who says that she had wanted him to kill Foster, but changed her mind after realizing she is still in love with Dexter. Foster warns him to stay away from Hannah, and has him beaten up. Dexter goes to Foster's boat to protect Hannah, but finds that she has already killed him. The two of them dispose of the body, and promise to watch out for each other. The two end up having sex and rekindle their relationship.
Born Free (Dexter)
After finding a clue at Rudy's house, Dexter arrives at the house of his biological mother, Laura Moser. Flashbacks reveal that Rudy, whose real name is Brian Moser, is in fact Dexter's brother. He also witnessed the murder of their mother, but did not repress the memory; instead, he grew up in a mental institution and was treated for antisocial personality disorder. Dexter meets Brian in their childhood home, where he is keeping Debra. He intends to kill Debra with Dexter as a sort of "family reunion", but Dexter stops him. As Doakes and the police close in on the house, Brian escapes through a trap door and Dexter is left with Debra, appearing to have saved her.