After initially seeing a drop-off from its huge premiere ratings, "Agents of S.H.I.E.L.D." appears to holding strong now in the ratings, as one of the most successful shows of the new fall season. The fourth episode of "Marvel's Agents of S.H.I.E.L.D." attracted 7.7 million viewers and pulled a 2.7/8 in AD18-49. It was good enough to hold even in viewers and pacing within 1-tenth of the prior week's Fast Affiliate numbers - (7.7 mil and 2.8/9). Last week, the show went up in the Nationals by 200k in viewers and 1-tenth of a rating point to 7.9 mil and a 2.9 rating. Here are more comparison details from ABC. ABC's "Marvel's Agents of S.H.I.E.L.D." finished a strong No. 2 in the 8 o'clock hour to CBS' "NCIS." In Adults 18-49, "S.H.I.E.L.D." (2.7/8) beat NBC's season premiere of "The Biggest Loser" by 23% (2.2/7) and Fox's comedies by 93% (1.4/4 for "Dads"/"Brooklyn Nine-Nine"). It was the No. 2 scripted TV show on Tuesday in Adults 18-49. The show was up week to week in Adults 18-34 (+16%), Men 18-34 (+20%) and Women 18-34 (+11%). The ABC drama dominated its hour with Adults 18-34 and key Men (M18-34/M18-49), ranking as Tuesday's No. 1 TV show for the 4th straight week in Men 18-34 and Men 18-49. On average, "S.H.I.E.L.D." is improving ABC's Adult 18-49 delivery in the time period year over year by 175% in Adults 18-49. The season's No. 1 freshman series in Adults 18-49, ABC's "S.H.I.E.L.D." is also the highest-rated new show this season with Upscale young adults (with a 6.8 rating among AD18-49 in $100k+ annual income homes).In fact, it is the season's No. 3 rated Upscale entertainment series, behind only "Modern Family" and "The Big Bang Theory," respectively. "Marvel's Agents of S.H.I.E.L.D." also reports the youngest Median Age (45.1 years) for any ABC series and is considerably younger than both Fox's "Sleepy Hollow" (47.3 years) and NBC's "Blacklist" (53.8 years). After finishing premiere week as the biggest regular series gainer in the L+7 Adult 18-49 ratings (+2.3 rating points), "S.H.I.E.L.D." continues to see increasing playback in the Live + 3 Day numbers (Week 3 +52% vs. Week 2 +48% vs. Week 1 +38%).