Update 2: Despite advertising an “OMG moment,” Thursday’s “Scandal” could only match last week’s 2.8 adults 18-49 rating. It averaged 8.22 million.

Update: The uptick in the overnight metered market ratings evidently did not translate to the adults 18-49 rating.

According to Nielsen’s fast national data, Thursday’s “Scandal” dipped slightly to a 2.7 adults 18-49 rating with 8.1 million viewers. The slight declines in both marks come despite promotion for the episode’s “OMG” cliffhanger.

Earlier in the night, “Once Upon a Time in Wonderland” posted a 0.8 with 3.1 million viewers. “Grey’s Anatomy” underwhelmed with a 2.3 and 7.1 million.

Unable to create the excitement that surrounded its midseason premiere, the tease of an “OMG moment” nonetheless helped “Scandal” grow slightly in the overnight metered market ratings.

Up a tenth from last week’s comparable overnight number, Thursday’s “Scandal” posted a 6.2 household rating.

Whether the show enjoyed a corresponding increase in adults 18-49 will be revealed at 11:30AM, but already certain is the fact that “Scandal” outdelivered timeslot competition from CBS’ “Elementary” and NBC’s “Parenthood.”

Thursday’s “Scandal,” which ended on a cliffhanger, featured Jake gunning down the two women who were helping David Rosen leak the story about Vice President Langston’s foray into murder. Jake then pulled the trigger a third time to shoot Rosen, James Novak or an unseen character in the distance. The episode ended before viewers learned whom he shot.

Earlier in the night, ABC’s “Once Upon a Time in Wonderland” delivered a poor 2.2 at 8PM. “Grey’s Anatomy,” now facing “American Idol,” posted a 5.9 at 9PM.