
'Above Suspicion: The Red Dahlia', a three-part series, kicked off with an average 6.7 million audience and a 25.6% share of viewing.
It was up against the start of the sixth run of BBC One's do-gooding fraudster caper 'Hustle', which pulled in six million viewers, a 22.9% share, and has five more episodes to go.
Channel 4, the next most viewed terrestrial channel, managed two million viewers and an 8.4% share with a documentary about obese children, 'Generation XXL'. The figure combines the ratings for Channel 4 and time-shifted Channel 4+1.
'Celebrity Big Brother' moved to the 10pm-11pm slot for its second evening, pulling in 3.5 million viewers and a 23.9% share. By comparison, 'BBC News At Ten' was watched by 5.1 million and 'ITV News At Ten' by 3.1 million. Last year the second CBB show was screened at 9pm and drew 3.1 million viewers.
BBC Two unusually offered a film at peak time, normally the preserve of Five. 'Death Defying Acts', starring Catherine Zeta Jones and Guy Pearce, gave the channel 986,000 viewers and a 3.7% share between 8.30pm and 10pm.
Five's three-hour movie 'Wyatt Earp' brought in 711,000 viewers, taking a 4.3% share, across its 9pm-12.45am run.