Henry Ian Cusick. Actor: Lost. Henry Ian Cusick is a Peruvian actor and director. He is best known for his role as Desmond Hume in the U.S. television series Lost (2004), for which he received a Primetime Emmy Award nomination. He also starred as Stephen Finch in the ABC drama Scandal (2012), as Marcus Kane in the CW drama The 100 (2014), as Dr. Jonas Lear in the Fox drama...