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.
Dexter Hartman
Dexter arrives in Albert Square after finding a photograph and address for his mother, Ava's (Clare Perkins), family that she has recently been reunited with after being given up for adoption as a baby. Dexter meets his cousin, Abi Branning (Lorna Fitzgerald), and they quickly become friends, with Dexter being invited to a family dinner, though Abi and the rest of the family are unaware that Dexter is related to them until Ava arrives to take him home. Abi is angry with Dexter for lying and Ava is unhappy that Dexter has gone back to Walford. Later, Ava's car breaks down in Walford on her way to a job interview, so Dexter takes it to the local garage where he becomes friends with Abi's boyfriend, Jay Brown (Jamie Borthwick), and Phil Mitchell (Steve McFadden) offers him work so he can pay for the repairs. Dexter becomes friends with Lola Pearce (Danielle Harold) and is shocked to discover that she is a mother. Lola is disappointed by his reaction but they remain friends. However, Phil, who has custody of Lola's baby, Lexi Pearce, is unhappy about Lola and Dexter being friends and tells Lola to stop seeing him. When Bianca Butcher (Patsy Palmer) tells Ava that her son Liam Butcher (James Forde) is in a gang, Ava reveals that Dexter used to be in a gang, which turns out to be the same gang. Ava and Dexter give Bianca advice, but after the gang are arrested and released on bail, they trash Ava and Dexter's home. Dexter tells Ava they have to move away.