Someone is trying to reach out to Steve McGarrett on Hawaii Five-0.

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They must not want to talk to him too bad, however, or else they wouldn't hang up every time McG (Alex O'Loughlin) picks up the phone. Those creepy, mouth-breathing hang-ups are generally the hallmark of a horror film, but in the case of McGarrett, the answer could be a little bit more personal.

Knowing that these calls come from a satellite phone, the Five-0 leader (and viewers) thinks they could be a message from Catherine (Michelle Borth).

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"I like that people are thinking that!" showrunner Peter Lenkov teased, according to TV Line. While he wouldn't dish on the calls' origins, the EP did reveal that the dropped calls will become a slow-burn storyline. "It's not an ongoing [plot point], but it's definitely a cloud that's not going to go away."

Who do you think is on the other end of the line? Catherine? Doris? Someone else all together? Sound off in the poll below!

In the meantime, Hawaii Five-0 will air their annual Halloween episode this Friday. Titled "Na Pilikua Nui (Monsters)," the Oct. 30 installment will see McGarrett's team take on a Frankenstein serial killer. Click the video below to see a preview.

Hawaii Five-0 airs Fridays at 9 p.m. ET on CBS.

Tags
Hawaii Five-O, Television, CBS