Those Who Kill is an American crime drama television series developed by Glen Morgan. The series originally premiered on the American cable television network A&E on March 3, 2014, and was re-launched on its sister network, the Lifetime Movie Network, on March 30. It is based on the Danish television series Den som dræber. The show was shot on location in Pittsburgh, Pennsylvania. On May 18, 2014, Morgan announced the show had been cancelled after only ten episodes.