Update 2: Thursday’s “Reign” was adjusted down to a 0.5 adults 18-49 rating with 1.48 million viewers in the finals. While not a strong showing, the overall performance narrowly eclipses that of the 2/27 episode, which did receive lead-in support from an original “The Vampire Diaries.”

Update: According to Nielsen’s fast national data, Thursday’s “Reign” posted a 0.6 adults 18-49 with 1.65 million viewers.

Though down from last week’s strong 0.7, the number, on par with many “Reign” episodes, is impressive given that the episode aired out of a low-rated “Vampire Diaries” re-run (0.3, 1.13 million).

Due to basketball pre-emptions, however, the rating and viewership totals could be subject to greater-than-usual adjustment in the Nielsen finals.

The good news? The CW’s “Reign” did not completely fall from the face of the Earth in its first airing absent an original “The Vampire Diaries” lead-in.

The bad news? The episode’s overnight rating did sink to a series low.

Down 0.2 from last week’s airing, Thursday’s “Reign” posted a 1.1 overnight household rating. While there is no guarantee the show endured the same decline in the adults 18-49 rating, it seems unlikely this episode matched last week’s solid 0.7 adults 18-49 mark.

CW’s “The Vampire Diaries” re-run, which led into “Reign,” posted a 0.7 rating. Last week’s original installment delivered a far more impressive 1.7.

Because The CW will likely use “The Vampire Diaries” to launch a new series (or to prop up a different veteran) this fall, “Reign” will presumably move to a new timeslot (and thus permanently lose its “TVD” lead-in) for the 2014-15 season.