I expected but was dismayed to find there isn't a Griffiths book on relativity. However, there is a bookified copy of his mentor's lecture series: https://www.amazon.com/Sidney-Colemans-Lectures-Relativity-Griffiths/dp/1316511723
Caveat from one of the reviews: "pretty good, but is not complete and missing the black hole stuff that came after these lectures". But, just on the virtue of Griffiths' books, I'd give it a shot.