In the upcoming episode of "Hawaii Five-0" Season 7, fans will get to know Danny's sister Bridget who might be interested with a co-worker. Rumors are rife that this is possibly attached to a larger case for the episode since Missy Peregrym will be seen in a totally different environment with her brother.

The new episode will also feature a case from the past which will be reopened since a teenage boy realizes that he may be an eyewitness to the assassination of a young person from ten years ago when he begins to undergo hypnosis as a type of therapy for his PTSD.

The synopsis of Episode 10 entitled "Ka Luhi" which means "The Burden "reads:

"Five-0 investigates the 10-year-old cold case of a missing teen when a boy suffering from PTSD undergoes hypnosis and realizes he may have witnessed her murder. Also, Danny's sister, Bridget (guest star Missy Peregrym), visits Oahu for a business conference, and he suspects that she may be getting too close to a co-worker."

"Hawaii Five-0" Season 7 will definitely be dramatic and at times funny as it returns on screen next year

Moreover, rumors have it that in Episode 11, Chin (Daniel Dae Kim) will die as he goes to Mexico to rescue his niece Sara who is kidnapped. George Takei (Uncle Choi)along with Duane "Dog" Chapman reportedly returns on the show.

Meanwhile, latest reports suggest that Alex O'Loughlin as Steve McGarrett in the show will stay and will reprise his role as soon as his contract in the series ends.

Previously, it has been said that the actor is asking for a salary increase and it seems like the network has agreed on his demand.

However, it can be recalled that O'Loughin has expressed his retirement in one of his interviews.

"I signed on for another two (seasons), which is this year and next year, series seven and eight, and I don't know if I can sustain any more than that just physically," he said.

"I've taken so many physical hits on this show, my back is pretty bad and I've got a lot of fixing I've got to do. I've got to fix my body," he continued.

"Maybe 15 years ago I'd say 'yeah I want to jump off that building' but I was 40 a couple of weeks ago so I kind of know my place. There are certain things you don't try to start doing at 40," he added.

"Hawaii Five-0" Season 7 airs December 9 with all-new episode on CBS.