TV Ratings: 'MasterChef' Hits Season High

The Fox competition rises 17 percent for its best showing this summer, leading in to the return of "Hotel Hell," as "Under the Dome" takes a hit.

Fox took the night among adults 18-49 on Monday, thanks to a season high for MasterChef. The culinary competition jumped 17 percent (three-tenths of a point) from last week to a 2.1 rating in the key demo.

That led in to the return of Gordon Ramsay sister series Hotel Hell (1.5 adults), which saw its last premiere nearly two years ago. In that time the show shed four-tenths of a point from its series debut.

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Both The Bachelorette (1.8 adults) and Mistresses (1.0 adults) were even on ABC, while American Ninja Warrior (1.9 adults) improved two-tenths of a point on NBC.

Under the Dome dropped four-tenths of a point for a 1.5 rating among adults under 50 — making it the series' lowest-rated live-plus-same-day score to date. The series is finding more and more of its audience among time-shifters, with the premiere now jumping 62 percent in live-plus-7.

Over on The CW, the recently renewed Whose Line Is It Anyway? (0.6 adults) was steady, as were Backpackers and Seed — both of which averaged just a 0.2 rating.