Question: how many episodes in the serie were title "The Key"
SQL: SELECT COUNT("No. in series") FROM "1-29803475-3" WHERE "Title" = '"The Key"';

Question: what is the name of the episode directed by James Bobin
SQL: SELECT "Title" FROM "1-29803475-3" WHERE "Directed by" = 'James Bobin';

Question: who directed the episode that have 0.25 million u.s viewers
SQL: SELECT "Directed by" FROM "1-29803475-3" WHERE "U.S. viewers (million)" = '0.25';