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_10718984_2 (no_in_season INTEGER, written_by VARCHAR, us_viewers__millions_ VARCHAR)

### Question ###
What is the number in the season that Marlene Meyer wrote and 20.49 million people watched?

### Accurate SQL ###

SELECT MAX(no_in_season) FROM table_10718984_2 WHERE written_by = "Marlene Meyer" AND us_viewers__millions_ = "20.49"