who plays mary mcgarrett
I am â Hercules!! If CBSâ âHawaii Five-0â pilot goes to series, one regular character on the show will be Mary Ann McGarrett, younger sister of Five-0 chief Steve McGarrett, according to the Hollywood Reporter. Taryn Manning (â8 Mile,â âSons of Anarchyâ) plays the character, who was not a regular on the 1968-1980 original series.