I Love You But I've Chosen Darkness

It's episode five of One Tree Hill season 4 and the truth about Peyton's stalker, who poses as her long lost half-brother (as you do), Derek is revealed more so to her than to us.
It's a chilling episode in a way, signalled by the black opening title and no cast credits, in a similar vein to last season's shooting episode.
The episode, I Love You But I've Chosen Darkness, eludes to the way Peyton (left with evil Derek) will choose to handle her stalker's obsession. It's not really surprising.
The ending, where Lucas and the real Derek push the stalker out of Peyton's bedroom window, is a shade predictable as he gets away, certain to resurface later in the season.
The second episode viewed last night, Where Did You Sleep Last Night, is a much lighter affair. It's great how they have mixed it up. After the shooting episode last season there was a much funnier episode, balancing the tone.
This one, while still dealing with Peyton's worries about stalker Derek still being on the loose, focuses on Brooke and her affair with a guy who turns out to be her english teacher. Didn't see that coming. Also at the centre is the basketball team and Mouth's hilarious sidekick commentator Gigi who announces to him that she intends to ask him out.
Slowly getting through them but I'm keen to see where this is heading.