Table: tv_episode_data_22
Columns: no_in_series
no_in_season
title
directed_by
written_by
original_air_date
u_s_viewers_millions

Question: How many season numbers are there for the episode seen by 13.54 million people in the US?
SQL: SELECT COUNT("no_in_season") FROM tv_episode_data_22 WHERE "u_s_viewers_millions" = '13.54'

Question: What's the series number of the episode directed by Skipp Sudduth?
SQL: SELECT "no_in_series" FROM tv_episode_data_22 WHERE "directed_by" = 'Skipp Sudduth'

Question: Who wrote the episode seen by 10.64 million people in the US?
SQL: SELECT "written_by" FROM tv_episode_data_22 WHERE "u_s_viewers_millions" = '10.64'

Question: Who directed the episode titled "Redemptio"?
SQL: SELECT "directed_by" FROM tv_episode_data_22 WHERE "title" = '"Redemptio"'