Table: spearhead_episodes
Columns: episode
original_air_date_uk
episode_title
director
writer
cast

Question: If the episode number is 2-01 what is the original UK air date?
SQL: SELECT "original_air_date_uk" FROM spearhead_episodes WHERE "episode" = '2-01'

Question: If the episode title is Pressures, what are the names of the cast?
SQL: SELECT "cast" FROM spearhead_episodes WHERE "episode_title" = 'Pressures'

Question: What is the episode number for episode title Leave Takers?
SQL: SELECT "episode" FROM spearhead_episodes WHERE "episode_title" = 'Leave Takers'

Question: For episode number 2-03, what are the names of the cast?
SQL: SELECT "cast" FROM spearhead_episodes WHERE "episode" = '2-03'