Vanessa Marcil

Hawaii Five-0 is enlisting Vanessa Marcil for some major couch time.

The Beverly Hills, 90210, General Hospital and Las Vegas vet will appear as a therapist who McGarrett (Alex O'Loughlin) suspects is involved in a murder case, TV Line reports. Her episode is slated to air in November.

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"Can now die happy. On set laughing with Christine Lahti," Marcil tweeted Thursday. "Not only is she beyond as an actress but she's the coolest chick ever."

Hawaii Five-0 airs Mondays at 10/9c on CBS.