Conversation so far:
how many episodes are there in season 2 of preacher
There are 13 episodes in season 2 of Preacher
is the series based on a book
The series Preacher is based on the comic book series Preacher created by Garth Ennis and Steve Dillon, and published by DC Comics' Vertigo imprint.
how many seasons of preacher are there
The series Preacher is 4 seasons long

Question: when did the series conclude
Self-contained rewrite: when did the series preacher conclude