The closing moments of "Faith and Despondency" set the stage for a terrible run to the series finale on Dec. 9
Series stars Charlie Hunnam and Tommy Flanagan will also appear on FX's "Anarchy Afterword"
Smith will play a devout churchgoer who's forced to make an alliance with the Sons of Anarchy on FX drama
Biker drama draws 5.4 million total viewers
"Sons of Anarchy" blames emphasis on quantity over quality