The teaser for the next episode of season 4 of Hawaii Five-O features guest star Jorge Garcia (Lost), who steps in to help the team out with a special case.

Garcia plays a conspiracy theorist and this guest appearance will reunite him with former Lost co-star Daniel Dae Kim, who plays detective Chin Ho Kelly on the show. The team is working on a murder case that reveals a centuries-old conspiracy which has something to do with the Hawaiin secret society. Garcia's character, who is an expert on the subject, is brought in to assist them in solving the case.

In other Hawaii Five-O news, Grace Park was recently spotted filming for the show in Chinatown, Vancouver.

Parts of the show are currently being filmed in Chinatown. According to reports, the bits are being shot in Chinatown so as not to inconvenience American-Candian actress, who recently gave birth in the Vancouver. O'Loughlin, Caan, and Kim flew in to shoot these scenes. It also seems like Chinatown was an easy replacement over taking the cast and crew to Shanghai.

Park plays officer Kono Kalakaua on the show. In the most recent episode, A' ale Ma'a Wau, Kalakaua was mostly seen on the run. In the finale of season 3, Parks' character was trying to clear her name from being implicated in a Yakuza-orchestrated murder. She left for Shanghai with with Adam and Doris McGarrett, Steve's mother after being framed for the murder.

In the pictures taken by YVRshoots, Park is seen in a grey leather jacket and t-shirt with black jeans, talking on a walkie-talkie. O'Loughlin plays Steve McGarrett and Caan plays detective Dano Williams

The latest episode also highlighted by Catherine Rollins quitting the navy to work in the private sector one of her former lovers, Billy. It has been suggested that this might cause friction between Danny (Caan), who is Catherine's current boyfriend, and her.

Ka 'oia'i'o ma loko will air on Oct. 11 at 9 p.m. on CBS.

Watch the teaser:

Tags: Hawaii Five-O Season 4 grace park