Who wrote the episode having a US viewership of 3.74 million?
CREATE TABLE table_27905664_1 (written_by VARCHAR, us_viewers__million_ VARCHAR)
SELECT written_by FROM table_27905664_1 WHERE us_viewers__million_ = "3.74"
### Context: CREATE TABLE table_27905664_1 (written_by VARCHAR, us_viewers__million_ VARCHAR) ### Question: Who wrote the episode having a US viewership of 3.74 million? ### Answer: SELECT written_by FROM table_27905664_1 WHERE us_viewers__million_ = "3.74"