Why did a special-ops marine attack a group of men in a bar?
That was a huge question on NCIS: New Orleans Season 3 Episode 17 when the team went into overdrive to try and locate the man.
Their investigation went city-wide as they tried to make sense of the case.
In other events, Tammy's disgraced ex-husband resurfaced after it emerged that he could have murdered the son of a crime boss.
Did Tammy opt to help him?
Use the video above to watch NCIS: New Orleans online to get up to speed with all the drama.
Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.