The ratings for 'True Detective' finale ratings dropped double digits in comparison to season 1.
According to Deadline, Nic Pizzolatto's series, 'True Detective' suffered a massive ratings drop. Last year, 'True Detective' ended their first season on a high note. Everyone was talking about Matthew McConaughey's acting performance and Matthew McConaughey's on screen chemistry. But, the popularity for 'True Detective' dropped after the first few episodes of season 2.
unday’s TD S2 ender fell 15% from the 3.2 million who tuned in for the Season 2 opener on June 21. However, in some numbers good news for HBO, the S2 finale did rise 25% from the series low of 2.18 million that the penultimate August 2 episode drew. In fact, that’s one of a couple of potentially positive signs for True Detective going forward. [Source>
Earlier this month, HBO's president of programming Michael Lombardo defended True Detective's second season and said the door is "open" to a Season 3 if Pizzolatto wants to do it.