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_18335117_3 (director VARCHAR, no_in_series VARCHAR)

### Question ###
When 1 is the number in series who is the director?

### Accurate SQL ###

SELECT director FROM table_18335117_3 WHERE no_in_series = 1