 As they dig into the case, they revisit the cabin Doakes died in and discover that Santos Jimenez had rented the cabin, prompting Tom to realize who he is.He reveals to LaGuerta that Jimenez is responsible for Dexter's mother's death and that Brian the Ice Truck Killer, is Dexter's brother.LaGuerta connects Jimenez's disappearance and Dexter's background and immediately starts to believe Dexter set Doakes up and he is the true BHB.