<P> Mitchell lives with his wife , Sally , and his teenaged children , Jonah and Rebecca . He has another , older daughter by a previous relationship : Christine Hill , who witnessed one of his murders as a child . He treats her like a shameful secret , forbidding her from contacting him and keeping her existence hidden from his other family . She tries unsuccessfully to win his love , going so far as to commit murder for him ; she kills FBI agent Frank Lundy and wounds Dexter 's adopted sister Debra to protect her father from the police . Her actions have the opposite of the intended effect , however : When he learns what she has done , Mitchell tells her he wishes she had never been born . She commits suicide shortly afterward . </P>
<P> Mitchell lives with his wife , Sally , and his teenaged children , Jonah and Rebecca . He has another , older daughter by a previous relationship : Christine Hill , who witnessed one of his murders as a child . He treats her like a shameful secret , forbidding her from contacting him and keeping her existence hidden from his other family . She tries unsuccessfully to win his love , going so far as to commit murder for him ; she kills FBI agent Frank Lundy and wounds Dexter 's adopted sister Debra to protect her father from the police . Her actions have the opposite of the intended effect , however : When he learns what she has done , Mitchell tells her he wishes she had never been born . She commits suicide shortly afterward . </P>
who shot dexter 's sister in season 4
who shot dexter 's sister in season 4
Christine Hill
Christine Hill