The return of the US sci-fi drama import Heroes pulled in 3.7 million viewers to BBC2 last night, April 24.

Heroes began its second series with a share of 16% between 9pm and 9.50pm, according to unofficial overnights.

Background show Heroes Unmasked, which immediately followed the series two opener between 9.50pm and 10pm, attracted 2.7 million viewers and a 12% share.

Last night's audience for the NBC Universal series was down on the series one opener last on BBC2 last July, which had 4.3 million viewers and a 19% share.

But last night's episode, the first of 11, did beat the ITV1 opposition in the 9pm hour.