Table: tv_episode_data_13
Columns: no_in_series
no_in_season
title
directed_by
written_by
original_air_date
production_code
u_s_viewers_million

Question: Who was the episode writer when the viewers reached 3.03 million in the US?
SQL: SELECT "written_by" FROM tv_episode_data_13 WHERE "u_s_viewers_million" = '3.03'

Question: Who wrote the last episode (episode 15) of season 3?
SQL: SELECT "written_by" FROM tv_episode_data_13 WHERE "no_in_season" = 15

Question: How many episodes did Cliff Bole directed in season 3?
SQL: SELECT COUNT("title") FROM tv_episode_data_13 WHERE "directed_by" = 'Cliff Bole'