Dexter confronts a battered girl named Rachel in this clip. At least that's what she claims her name to be, but spoilers have revealed it to be Lumen.
Dexter is accused of being an unreliable parent in this clip. The woman doing the accusing? His Irish nanny.

Dexter Season 5 Episode 4 Quotes

Masuka: He's got daddy's eyes.
Batista:... and your penis size.

What's your plan here? Nurse her back to health so she can go to the police? If she gives the cops enough to track you down then everything falls apart. Harrison grows up visiting you on death row.