WARNING: This article contains spoilers and plot predictions for Hawaii Five-0 Season 10. Read at your own risk.

When Hawaii Five-0 Season 10 started its course, Katrina Law's Quinn Liu was introduced as a character who will play a huge role in the center case of the installment. However, the first few episodes that aired weeks ago did not welcome her yet as an official part of the Five-0 crew. 

Even so, the upcoming episode is hinting that this installment will now welcome her on her first day on the job. As it happens, McGarrett will finally ask her to officially join the team after considering what they've gone through in the past few weeks. 

Her, becoming an official part of the crew is a huge thing to celebrate. But, it looks like that they will have to postpone it as a new case will arrive. 

According to Cartermatt, the case will be very challenging and difficult. While Quinn Liu is now present and able to help them with the case, it won't be enough. 

Based on the synopsis of Hawaii Five-0 Season 10 Episode 4, McGarrett will seek further assistance from an imprisoned hacker. This only means that the hinted kidnapping case will be far more challenging than what they've all thought. 

Aside from this dynamic, the publication also revealed that Quinn Liu's first day would be a rollercoaster ride, especially for her. Unfortunately, she will be "arrested" in the said episode. As to why this will happen, it seems that the fans will just need to watch the episode. 

These hints were based on the newly released trailer of Hawaii Five-0. As seen it the last part of the clip, Captain Lou Grover asks her, "how's that for a first day?" which only goes to show that her official arrival will be not the usual kind. 

The trailer also hinted that they would be able to "crack" something big in a case. It seemingly appears that it is related to Wes Cullen's arc, which brings in the participation of Quinn Liu.

Accordingly, fans are now convinced that the upcoming episode titled, Ukuli'i ka pua, onaona i ka mau'u (Tiny is the flower, yet it scents the grasses around it), will have two cases in its plot. While everything is still vague for some viewers, things will surely clear out once the episode drops on the network.

Hawaii Five-0 Season 10 Episode 4 will air on October 18, on CBS.