Table: episodes_23
Columns: no_in_total
no_in_series
title
directed_by
written_by
original_air_date

Question: What number in series is "Diamonds"?
SQL: SELECT "no_in_series" FROM episodes_23 WHERE "title" = '"Diamonds"'

Question: Who directed "A Tale of Two Hitmen"?
SQL: SELECT "directed_by" FROM episodes_23 WHERE "title" = '"A Tale of Two Hitmen"'

Question: How many number in series's are written by Greg Haddrick?
SQL: SELECT COUNT("no_in_series") FROM episodes_23 WHERE "written_by" = 'Greg Haddrick'

Question: What number in series is "Judas Kiss"?
SQL: SELECT "no_in_series" FROM episodes_23 WHERE "title" = '"Judas Kiss"'

Question: What was the original airdate of "A Nice Little Earner"?
SQL: SELECT "original_air_date" FROM episodes_23 WHERE "title" = '"A Nice Little Earner"'