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_name_29 (highest_average_point_ratings INTEGER, genre VARCHAR, number_of_episodes VARCHAR)
### Question:
What was the highest average point rating for a modern suspense show with 21 episodes?
### Answer:
SELECT SUM(highest_average_point_ratings) FROM table_name_29 WHERE genre = "modern suspense" AND number_of_episodes = 21