Requiem

Plot:

Caleb moves into Sheriff Buck's house to take up his evil mantle, and when he learns from Selena that Gail is pregnant with Lucas' child, he has her lured to the house. Dr. Peale has analyzed Lucas' blood work, and after a tip-off from Merlyn, Deputy Ben helps Billy dig up Lucas, who then goes after Caleb to change him back to the way he was.