It's VERY SLOW, but I got through the first arc of 65 eps or so on the island. When they switched locales and changed a large segment of the cast, I gave up on it. I might go back and finish it though. I think you can watch the first 13 weeks or so, get a feel for the best of the show and then bail without being left hanging. I think they were half expecting to be cancelled after the first 3 months, so they were wrapping things up fairly neatly.