I have to stick up for this show to counter all the other reviews. I've been watching since the beginning of the season and enjoy it every week. I fact it's one of the very few broadcast tv shows I still watch. OTOH, I did check out Part One of this show by watching the opening episode on the original NCIS for the first time in years. In contrast to Hawaii, it's gotten positively geriatric and sloooow. I much prefer the gorgeous scenery each week from Hawaii and the younger, more energetic cast. But to each their own. For those claiming they probably don't shoot in Hawaii, you obviously didn't even watch the first 5 minutes. Because they spend extensive time outdoors in every episode. And it's not like CBS hasn't been filming multiple shows on location there for years.
As for this particular episode, adding Wilmer V. To the mix did unfortunately create some awkward energy. It almost felt like he was on quaaludes or something. And why such an angry look all the time? It was actually a relief whenever they cut to a scene he wasn't in. Perhaps too much time on the other show rubbed off on him.
The other person from original NCIS, Jessica?, fit in better with the cast. Ernie was hilarious, in a cringey sort of way, calling her "M'lady" and bowing to her. The "T N T" backstory was too forced but still a little funny.
The show has really come together over the past season and is developing its own personality. I'm especially pleased Lucy's ex seems to be gone. They had so little chemistry, it was the opposite of chemistry. Being single really allows Lucy to shine more without that incredibly awkward storyline. Glad the coroner seems to be getting more time as well - I really like her. So happy the show is getting a second season!