After American Ninja Warrior took the top slot on Monday nights for two weeks, Masterchef overtook it this week with 1.8 million viewers in the 18-49 demographic. With the help of 24, Fox averaged a 1.6 in the 18-49 demographic. ABC’s Mistress pulled a 0.9, while the Bachelorette fell two points to a 1.6. CBS’s only original show, 48 Hours, had a 0.8, and the CW’s Whose Line is it Anyways? bought in 0.5. NBC’s American Ninja Warrior had another steady performance, despite being trumped by Masterchef, with a 1.6 rating.