According to both my TV Guide app and CBS's website, NCIS: New Orleans is airing at 8 p.m. this Tuesday night. That's 8 p.m. Eastern. And yes it didn't occur to me to see what timeslot it would be in next week.
Since that means you will be less likely to be busy at 9 p.m., may I suggest you turn your TV to Fox to catch the wonderful series The Grinder, which is a sitcom with Fred Savage and Rob Lowe playing brothers: Fred is a lawyer and Rob is his brother an actor who used to be a lawyer on TV and thinks he can be one in real life. It's really funny. Trust me. (and if you've ever read TVTropes.com , trust me more.)