BBC America’s Supernatural Saturday block has gotten a ratings jolt with the premiere of new drama “Intruders.”

The first episode of the eight-part paranormal thriller, airing behind the return of “Doctor Who,” delivered 1.5 million viewers, according to Nielsen’s “live plus-3” estimates. It had averaged 796,000 viewers in the same-night numbers initially reported, so the additional three days of DVR playback added 54% (or 427,000 viewers) to its total.

The show also had a 77% growth among adults 25-54 from its same-night tune-in (rising from 352,000 to 623,000 in “live plus-3”), a significantly greater lift than seen by the series premieres of other BBC America shows like “Atlantis” (+38%) and “Orphan Black” (+29%). “Intruders” is also second only to “Copper” as the channel’s highest series premiere ever in live+3.

From writer and executive producer Glen Morgan (“The X-Files”), “Intruders” is about a secret society devoted to chasing immortality by seeking refuge in the bodies of others. The series is based on British novelist Michael Marshall Smith’s book of the same name and is produced by BBC Worldwide Productions.

BBC America has also released the second episode of “Intruders” early via VOD, BBCAmerica.com and its YouTube channel.

“Intruders” airs at 10 p.m. Saturdays on BBC America.