Luther

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Season 1

2010-05-04 1x01 - Episode 1
2010-05-11 1x02 - Episode 2
2010-05-18 1x03 - Episode 3
2010-05-25 1x04 - Episode 4
2010-06-01 1x05 - Episode 5
2010-06-08 1x06 - Episode 6

Season 2

2011-06-14 2x01 - Episode 1
2011-06-21 2x02 - Episode 2
2011-06-28 2x03 - Episode 3
2011-07-05 2x04 - Episode 4

Season 3

2013-07-02 3x01 - Episode 1
2013-07-09 3x02 - Episode 2
2013-07-16 3x03 - Episode 3
2013-07-23 3x04 - Episode 4

Season 4

2015-12-15 4x01 - Episode 1
2015-12-22 4x02 - Episode 2