It's an amazon show.
I watched the pilot last night just because I'm a fan of Ribisi. Basic plot is a dude is getting out of prison but owes some people 100k and they are going to kill him. His chatty patty cell mate basically told him about his life growing up on a farm with his grandparents. They kind of look a like, so he goes to the guys's grandparents house when he gets out and assumes his identity.
Margo Martindale plays the grandmother (Mags Bennett)
None of the family has seen the guy in 20 years so he's able to pull it off. Only been a pilot episode so far, but it looks promising.
Oh yeah......they guy that wants to kill him is none other than Bryan Cranston.