Gracepoint is not currently on Netflix.
Netflix often picks up shows a while after they are shown on TV, and as Gracepoint is currently on Fox- the first episode being screened on 2nd October 2014- it is likely that it will not be on Netflix for a while yet.
However... You can watch it online on a number of different websites. The easiest way to do this is on Fox. As of today, the episodes are available for another 162 days, so you have plenty of time to get through them!
You do have to be in the US to view this content though. If you're not in the States you can mask your IP address by installing add-ons for your web browser which allow you to view any website without geographic restriction.
The best option to do this is Media Hint which is super easy to install and works perfectly!