The second instalment of the second 'Mistresses' series drew 4.2m to BBC One, enough for a 17% audience share at 9pm-10pm.
The audience fell 600,000 from last week's debut when 4.8m tuned in to catch up with the tangled love lives of Katie, Trudi, Siobhan and Jessica.
The second episode last night managed to gain a steady audience as the broadcast progressed, gaining 700,000 viewers over the course of the hour to end with 4.7m viewers at 10pm.
'Mistresses' lowest viewer levels hit when football action was peaking on ITV1 with more than 8.3m watching the Champions League clash at 9pm.
Five's 'CSI' narrowly edged out BBC Two's 'Horizon' pulling in 2.7m viewers and a 10.8% audience share for Channel Five.
'Horizon: The Secret Life of Your Bodyclock' drew 2.4m and a 9.5% audience share to BBC Two, and answered timeless questions such as when is the best time of the day to have sex and when you are most likely to have a heart attack (in the morning).
Viewers continued to avoid Channel 4's documentary 'Boys and Girls Alone' which limped to its series finale, pulling in 1.3m, dropping 700,000 from a week earlier, for a 5.2% audience share between 9pm and 10pm. An additional 185,000 tuned in on Channel 4+1.
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