Decent. I can't say the Haunted Highwayman angle was the most intriguing or cool episode ... but certain moments really stood out as great ideas. The Stranger's response to 13's approach at the end? Gold. The Stranger has always been mysterious, and has always had that bit of an edge.
The Stranger's actual means of dealing with the villain? Choice. Better still - the spirit of Terrence of 1880's chastising of his descendant's silly "believing in ghosts". That moment was golden.
The terrier was interesting, too.
Best part of all I think was when his neighbor asked him if he was a 'religious man' and the strained, totally sad look on his face.
On a somewhat unrelated note, I think I just realized that Stranger was the narrator of the Halloween issue of Action Comics, in addition to being the guest-star.