In season 4 of Hawaii Five-O, Danny Williams will open up about his Gabby/L-Word dilemma to Steve McGarrett and McGarrett will figure out how his mom's connected to Wo-Fat., according to a TVLine report.
In the season's premiere episode, Williams (Scott Caan) will pick an inopportune time to talk to McGarrett (Jack Lord) about Gabby. Williams and Gabby had reunited toward the end of the last season.
McGarrett will find more about his mother's relationship to Wo Fat. Melanie Griffith will be guest starring in the role of McGarrett's mother.
The premiere will also feature one of the "least expected outcomes" to a hostage scenario.
In the first episode, Aloha ke kahi I ke kahi, of Season 4, McGarrett will break the law so he can find his kidnapped girlfriend Lieutenant Catherine Rollins (Michelle Borth). Steve and WoFat will also make a narrow escape from maximum security prison.
In other recent plot reveals about Season 4, Rollins' decision to switch jobs and work with a former boyfriend might cause McGarrett to get jealous.
The first few episodes of Season 4 will reunite Daniel Dae Kim with Lost alum, Henry Ian Cusick and Jorge Garcia. Cusick will appear in the premiere as Ernesto, a member of a terrorist group named National Liberation Movement. "He's tied in to some baddies we introduced last season," executive producer Peter Lenkov told TVGuide.
Season 4 will include a number of other guest stars Nick Jonas, Rumer Willis, Terry O'Quinn, Carol Burnett, and Rebecca DeMornay.
Season 4 premieres on CBS on Friday, Sept. 27.
Watch the promo for Season 5 of Hawaii Five-O here: