Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_23242933_2 (no_in_series INTEGER, written_by VARCHAR)
### Question:
What's the series number of the episode written by Dan Vebber?
### Answer:
SELECT MAX(no_in_series) FROM table_23242933_2 WHERE written_by = "Dan Vebber"