Table: tv_episodes_2
Columns: total
series
title
writer
director
original_air_date

Question: Who is the director of the episode that corresponds to the total episodes number 14? 
SQL: SELECT "director" FROM tv_episodes_2 WHERE "total" = 14

Question: What's the title of the episode that Rob Heyland wrote? 
SQL: SELECT "title" FROM tv_episodes_2 WHERE "writer" = 'Rob Heyland'

Question: What number from the total number of episodes is the episode written by Julian Unthank?
SQL: SELECT "series" FROM tv_episodes_2 WHERE "writer" = 'Julian Unthank'