Fans had long waited for Kono to be reunited with her husband. Unfortunately, trouble seems to have found the couple again in "Hawaii Five-0" season 7's Halloween episode.

The previous episode saw Adam (Ian Anthony Dale) being released early from prison and reuniting with Kono (Grace Park). Five-0's sharpshooter had something special planned for the day but had to work at the last minute to infiltrate a hostage situation. As it turned out, their suspect in a gun heist had taken a room full of people hostage to protest gun use.

The Five-0 team was able to end the situation in a relatively peaceful fashion, giving Kono and Adam enough time to visit a former inmate's daughter and help her reunite with her family. Chin Ho (Daniel Dae Kim) was also able to spend some precious time with his niece before she left for Mexico.

Unfortunately, Adam and Kono's peaceful life will be shattered once more as episode 6 will find the couple kidnapped by an alleged death cult. Meanwhile, the other members of the team investigate the murder of a medium who appeared to have been scared to death by a poltergeist.

The show's Halloween episodes are usually quite fun and just a tad bit spooky. But a trailer for the upcoming episode, "Ka hale ho'okauweli" or "House of Horrors," boasts a horror story vibe. The clip starts with a disturbing shot of Kono tied to a post, followed by a scene showing her and several people being led somewhere by people in masks. Adam is clearly seen in the background as well. The couple are shown stopping their car when someone runs across the road. Could this have led to their capture?

Meanwhile, the other members of the Five-0 team are at another crime scene. There's a montage of scenes that show Kono being attacked in the woods, the men in masks searching for someone, McGarrett (Alex O'Loughlin) looking worried, and another woman tied up and on the ground. The clip ends with two men, one carrying an axe, entering the room where Kono is being held captive.

Fans are no doubt on tenterhooks as they wait for how, or if ever, Kono and Adam will escape this terrifying group. Aside from that, viewers are also wondering whether Masi Oka will be back this episode and what Keanu Reeves-inspired costume he will have on. After all, it's a "Hawaii Five-0" tradition that should not be broken.

Episode 6 of "Hawaii Five-0" season 7 will be aired on Oct. 28 at 9 p.m.