Ncis new orleans season 1 episode 23

A great choice!

NCIS: New Orleans Season 1 Episode 23 is titled "How Much Pain Can You Endure". Here's a brief summary:

The team investigates the murder of a former Navy SEAL who was working as a private security contractor. The victim was found with a mysterious tattoo on his chest, which leads the team to suspect that his death may be connected to his past military service. Meanwhile, Pride's past comes back to haunt him when he's forced to confront a former colleague who's now a suspect in the case.

This episode originally aired on May 5, 2014.