Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_29267 ( "No. in series" text, "No. in season" text, "Title" text, "Directed by" text, "Written by" text, "Original air date" text, "Production code" text )

### Question ###
Who was the director for the Episode number in season 10a?

### Accurate SQL ###

SELECT "Directed by" FROM table_29267 WHERE "No. in season" = '10a'