Henry Ian Cusick (born 17 April 1967) is a Peruvian-born British actor of television, film, and theatre.He is well known for his role as Desmond Hume on the U.S. television series Lost, for which he received a Primetime Emmy Award nomination. He starred in the ABC drama Scandal, as Stephen Finch, and is currently starring as Marcus Kane In the CW drama The 100.