Since you like Dexter, you obviously enjoy scary stuff. I would recommend you check out Grimm if you have not done so yet. I am completely hooked on that show.
Season 1 was awesome, I almost gave up on season 2 with the Juliet's soap opera going on but now with season 3 it's back on track!
Google "watch Grimm online" so you can catch up on past episodes.
I hope you feel better soon.