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_16581695_4 ( directed_by VARCHAR, no_in_season VARCHAR )

### Question ###
Who directed episode 12 in season 3?

### Accurate SQL ###

SELECT directed_by FROM table_16581695_4 WHERE no_in_season = "12"