It's Halloween time on "Hawaii Five-O" and the gang gets a case that fits the holiday, starting out with a serial killer.

Episode 6, titled "Na Pilikua Nui," which translates to "Monsters," will air on broadcast network CBS this Friday, Oct. 30 at 9 p.m. EDT, according to TV Guide.

There has been no shortage of stories this year to go along with the season-long theme of them fighting Gabriel as well as Adam and Kono's personal connections to him. In this next episode, the show will be playing along to the Halloween holiday theme.

The Five-O unit are no strangers to chasing down murderers or even serial killers, but this next one will have quite a unique edge to it, according to Spoilers Guide.

This serial killer is no ordinary one, but rather a person who is working based off his/her inspirations from the classic Mary Shelley novel "Frankenstein." Fans can almost imagine the aftermath of this person's crimes, which could included anything from dead bodies with dismembered limbs or organs to people being ripped apart, just like the monster itself once did in the story. There could even be a love and acceptance angle to it, just as the monster was forced to endure.

The one person that would be all over this case in the show is Jerry, but he gets a little preoccupied when an armed gang robs a blood bank that he is at. So he spends the episode trying to get help for the people there.

Danny is also feeling the squeeze of fatherhood when he finds out that Grace lied to him, then snuck out and went to a Halloween party. Of course, she could just be a chip off the old block.

Check out the preview below and go to the CBS website to get caught up on previous episodes.