"Hawaii Five-0" season 6 episode 6, titled "Na Pilikua Nui," which translates to "monsters," will arrive just in time for Halloween and will take full advantage of the evening festivities with a murder case seemingly inspired by Mary Shelley's "Frankenstein," a blood bank raid and a Halloween party that could go terribly wrong.

As shown in the promotional trailer, the Five-0 team will come across what might be the work of a psychotic serial killer. There is a single shot of a corpse that looks as if its limbs had been cut off and sewed back on or it might be the limbs of different victims sewn onto one person, akin to how Dr. Frankenstein created his monster in the novel.

Cartermatt points out that the episode won't be all grim and dark, however, as there are hints in the trailer that the episode will be able to throw in a little bit of humor. The report states that this might in fact be one of the "wackier" episodes for the series thus far, particularly after the heavy tone of the season's opening episodes.

While the team investigate the Frankenstein-inspired case, Jerry (Jorge Garcia) will be making an appearance as he calls the Five-0's attention to deal with an armed group raiding a blood bank. This may affect the team's capability to solve the Frankenstein case, which might require their full effort and attention.

Danny (Scott Caan), on the other hand, will have issues of his own as his daughter Grace (Teilor Grubbs) lies and sneaks out to attend a Halloween party. Nothing regarding this plot point is shown in the promotional trailer but given how Halloween parties can get out of have, especially when minors are involved, Grace may see herself get into serious trouble.

"Hawaii Five-0" season 6 episode 6, "Na Pilikua Nui," airs this Oct. 30 on CBS.