'Hawaii Five-0' season 7 spoilers, news: Doris gets abducted in episode 7, Alex O'Loughlin speaks on his plan to exit series

Five-0 must race the clock to free McGarrett's mother after Catherine (Michelle Borth) informs them that Doris (Christine Lahti) was captured and is about to be executed in the upcoming episode of the hit CBS procedural "Hawaii Five-0" season 7.
Titled "Ka makuahine a me ke keikikane (Mother and Son)," the episode airing tomorrow night will see yet another intense episode. According to the official synopsis, the team must save McGarrett's mother from her abductors before it's too late. After being away because of top-secretive reasons, Catherine resurfaces and informs Five-0 about the situation. It will be revealed that Doris is in danger of being executed after attempting to free Wo Fat's imprisoned father. Also, Chin's (Daniel Dae Kim) appeal to have his niece Sara's (Londyn Silzer) adoption delayed will be denied, and she must move to Mexico.
Tomorrow's "Hawaii Five-0" marks the show's 150th episode, and former cast members Christine Lahti, Michelle Borth and Sarah Carter will all return for the milestone episode. Lahti's daughter, Emma Schlamme, will be joining her mother to guest star as the young Doris McGarrett.
Episode 7 will certainly center on McGarrett since the abduction involves his own mother as the victim. O'Loughlin recently caught up with TV Line, and he shared some interesting teasers on what fans should expect when McGarrett meets his mom again. "It's going to be filled with different emotions, but it's also funny," he hinted. "They've gotten to a dynamic where they just frustrate each other!"
The actor previously announced that he's planning to exit "Hawaii Five-0" after season 8. Despite the show's increased ratings for this season, the actor said he is still not changing his plan. "I'm just trying to make it through the end of [Season] 7!" he continued. "[Five-0] is really, really wonderful, but it is an action show, I'm the main guy, and I defy anybody to do what I've done for as long I've done it and hold out the way I have. Dude, I was a fit, strong, healthy guy when I started the show, and I still am, but you sustain what you sustain. It's part of the gig."
Keep tuning in to "Hawaii Five-0" season 7 airing every Friday night at 9 p.m. ET on CBS.