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_73346 ( "No. in series" real, "No. in season" real, "Title" text, "Directed by" text, "Written by" text, "Original air date" text )

### Question ###
What s the episode number in the season that was written by Nancy Oliver?

### Accurate SQL ###

SELECT MAX("No. in season") FROM table_73346 WHERE "Written by" = 'Nancy Oliver'