Australian actor, known as Mary, Queen of Scots in Reign, who played the Romulan temporal agent Sera in the Strange New Worlds episode Tomorrow and Tomorrow and Tomorrow.
Adelaide Kane is an Australian actor, born in 1990, who began in the soap opera Neighbours and became widely known as Mary Stuart in Reign. Later roles include Teen Wolf, Once Upon a Time and Grey's Anatomy.
In the second season Star Trek: Strange New Worlds episode Tomorrow and Tomorrow and Tomorrow she plays Sera, who presents herself to La'An and an alternate James Kirk in 21st-century Toronto as a conspiracy-minded photographer. She is in fact a Romulan agent who has waited decades on Earth to kill the young Khan Noonien-Singh and so prevent the Federation.
Sera shoots Kirk at the Noonien-Singh Institute and is killed by La'An, who then finds the child and leaves him unharmed.