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.
Dex Dexter
Dex has been casually involved with Leslie Carrington, but their relationship ends when Leslie has a fling with Jeff Colby and goes to work for Alexis. Dex develops a friendship with Jeff's ex-wife (and Blake's daughter), Fallon. In episode 187, Fallon asks Dex to help her investigate a business deal in Africa, where he discovers that the key contact there, Harry Thresher, has ties to Alexis's new husband, Sean Rowan. Dex grows more suspicious and tries to warn Alexis, who dismisses his warnings as jealousy. In episode 194, Leslie confesses to Dex that she has been sleeping with Sean, and learned that he is seeking to destroy Alexis in revenge for the suicide of his father, Joseph Anders, which he believes was caused by Alexis. Dex warns Alexis who fears the worst.