What happened to Christopher on NCIS New Orleans? Katrina Schollenberger, SEO Reporter Updated: 3 Mar 2021, 13:07 NCIS New Orleans fans were left shocked to learn agent Christopher LaSelle would not be appearing in the last episodes of season seven. Season seven is the final season of the show, with the series finale is set to air Sunday, May 16, 2021. 5 What happened to Christopher on NCIS New Orleans? In season six of NCIS New Orleans, agent Christopher LaSelle was shockingly killed in a mission gone wrong. In episode Matthew 5:9, LaSelle died trying to avenge his brother's murder. He followed a trail of drug dealers, whom he linked to Cade's death down to Alabama.