It isn't gonna happen. The only shows you can watch online are the ones the studios want you to watch (in Hulu, etc). When it comes to shows like Dexter, virtually all of the sites claiming that you can watch episodes online are fake. They just want to lure you to the site to make money, or to sell you another fake service. Classic bait & switch.
At one time, I would have recommended watching them via streaming on NetFlix, but Showtime has decided to pull its Dexter episodes off NetFlix, so that's no longer an option. You'll have to rent the DVD's from NetFlix. It beats chasing fake online "channels"...
