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_10718631_2 (no_in_series VARCHAR, no_in_season VARCHAR)

### Question ###
Which episode was the number in the season where the number in the season is 10?

### Accurate SQL ###

SELECT no_in_series FROM table_10718631_2 WHERE no_in_season = 10