On 2 April 2017 , the series premiered in Denmark on Kanal 5 , and was released on DVD in Germany on 19 October 2017 . In the United Kingdom , BBC4 broadcast the first four episodes during March 2018 . The BBC pulled the series from their schedule for 24 March only following the terrorist attack in Carcassonne and continued on 31 March . The second season premiered on 26 March 2019 in Denmark
terrorist attack
Carcassonne and Trèbes attack
Below the Surface (Danish TV series)