In the Hawaii Five-0 episode ‘Ka makuahine a me ke keikikane (Mother and Son)’, McGarrett’s (Alex O’Loughlin) old flame, Lt. Catherine “Cath” Rollins returns. (Last time we saw Cath was in October 2015, when they broke up.) In this episode, Cath is the bearer of bad news. She tells Five-0 that McGarrett’s mother, Doris McGarrett (Christine Lahti), has been captured after trying to free Wo Fat’s father.
Cath is portrayed by Michelle Borth. She’s also known for her roles on Combat Hospital (Major Rebecca Gordon), The Forgotten with Christian Slater (Candace Butler), and Tell Me You Love Me (Jaime), among others. Hawaii Five-0 airs Fridays at 9pm on CBS.