Table schema:
CREATE TABLE table_23177573_1 (rank__week_ VARCHAR, written_by VARCHAR, directed_by VARCHAR)

Question: What was the week ranking of the episode written by Thomas L. Moran and directed by Andrew Bernstein?
SQL: SELECT rank__week_ FROM table_23177573_1 WHERE written_by = "Thomas L. Moran" AND directed_by = "Andrew Bernstein"