Figures shown are in millions and represent the number of viewers BARB has estimated. The 1st figure is Overnights, the 2nd figure is official Final total (includes people who recorded the show and watched within 7 days). The figure in brackets is its place in channel Five's top 30 for the week. 26/3/09 1.01 Pilot Episode
O/N: 3.6 Final: 4.21 (1)
2/4/09 1.02 Red Hair And Silver Tape
O/N; 3.2 Final: 3.80 (1)
9/4/09 1.03 Red Tide
O/N: 2.9 Final: 3.45 (1)
16/4/09 1.04 Ladies In Red
O/N: 2.3 Final: 2.91 (2)
23/4/09 1.05 Redwood
O/N: 2.4 Final: 3.03 (2)
30/4/09 1.06 Red Handed
O/N: 2.2 Final: 2.87 (2)
7/5/09 1.07 Seeing Red
O/N: 2.0 Final: 2.57 (5)
14/5/09 1.08 The Thin Red Line
O/N: 2.3 Final: 3.00 (2)
21/5/09 1.09 Flame Red
O/N: 2.3 Final: 2.89 (2)
28/5/09 1.10 Red Brick And Ivy
O/N: 1.5 Final: 2.08 (3)
4/6/09 1.11 Red John's Friends
O/N: 2.4 Final: 3.03 (1)
11/6/09 1.12 Red Rum
O/N: 2.4 Final: 3.16 (2)
18/6/09 1.13 Paint It Red
O/N: 2.4 Final: 3.12 (2)
25/6/09 1.14 Crimson Casanova
O/N: 2.2 Final: 2.85 (2)
2/7/09 1.15 Scarlett Fever
O/N: 2.3 Final: 2.90 (2)
9/7/09 1.16 Bloodshot
O/N: 1.8 Final: 2.52 (2)
16/7/09 1.17 Carnelian Inc
O/N: 1.6 Final: 2.34 (2)
23/7/09 1.18 Russet Potatoes
O/N: 1.6 Final: 2.19 (2)
30/7/09 1.19 A Dozen Red Roses
O/N: 1.5 Final: 2.18 (2)
6/8/09 1.20 Red Sauce
O/N: 1.6 Final: 2.24 (3)
13/8/09 1.21 Miss Red
O/N: 1.5 Final: 2.19 (3)
20/8/09 1.22 Blood Brothers
O/N: 2.1 Final: 2.87 (3)
20/8/09 1.23 Red John's Footsteps
O/N: 2.1 Final: 2.85 (2)