Family remains, Deans involvement?

Episode 4.13: Family Remains

Airdate: February 2009

The boys investigate a farm house that seems to be haunted by a woman in the walls. A family moves out to the country house after the oldest son, Andy, died in a car accident last year. The woman in the wall kidnaps and kills the uncle and also kidnaps the youngest son, Danny. It is unsure whether or not Danny survives because the ghost seemed to enjoy playing with Danny. For some reason unknown to everyone, including Sam, Dean is extremely motivated in saving Danny and helping this family.

Source: SpoilerFix.com

Why do you think Deans so eager to help? Is this part of his Redemption plan? Or is there something dark and sinister hiding in the eldest Winchester's closet... again...:D