BBC America has said the premiere of Torchwood on the channel delivered the biggest audience of any drama premiere in the 58-million-subscriber network's history.
The series, shown at 9pm Eastern Time on Saturday nights, attracted 496,000 total viewers, according to network officials.
In the target demographic of persons ages 25 to 54, the premier got 297,000 viewers. That's slightly ahead of how action drama Robin Hood performed when it premiered last year, at about the same rating (0.42). Viewer numbers were higher for Torchwood than Robin Hood because BBCAmerica is in more homes now.
A second airing, at midnight ET and 9 p.m. PT Saturday, delivered a 0.19 rating (139,000 viewers) in the target demographic, or 241,000 viewers overall.
Figures cited are live viewing and same-day viewing, which adds in a day’s worth of digitally recorded watching.
Meanwhile the series has received some very good reviews in the US press.
The Hollywood Reporter called the series "a crackling good, brilliantly conceived sci-fi series that targets actual grownups" while the Los Angeles Times described the show as "indescribably delicious".
TV Guide said the programme was a "a cheeky and often startlingly adult spin-off" and Variety said it has the fixings of a thinking-man's sci-fi series that doesn't take itself too seriously.
The Kansas City Star says the programme is "one of the best serial dramas to arrive on American television in 2007" and The Philadelphia Inquirer describes it as "by turns super-slick, raw, bizarre, hilarious, spooky, scary and sublimely sexy".