Peter Dinklage is stepping into the world of 'Dexter.' The Emmy-award winning 'Game of Thrones' actor is set to join Michael C. Hall in the 'Dexter' spinoff series 'Dexter: Resurrection.' Dinklage will play a billionaire venture capitalist named Leon, a series regular role. According to his character description, the world sees Leon as a generous philanthropist, but behind his polished exterior lies dark intrigue.