Table schema:
CREATE TABLE table_12570759_2 (us_viewers__millions_ VARCHAR, directed_by VARCHAR, written_by VARCHAR)

Question: How many millions of U.S. viewers watched the episode directed by Rob Bailey and written by Pam Veasey?
SQL: SELECT us_viewers__millions_ FROM table_12570759_2 WHERE directed_by = "Rob Bailey" AND written_by = "Pam Veasey"