Steven McCarthy: Steven McCarthy. Actor: The Expanse. Steven McCarthy is an award-winning actor, director, and musician. In 2018 McCarthy was awarded a Canadian Screen Award (CSA) for Best Guest Performance in a dramatic series for his portrayal of a dying rock singer in season one of 'Mary Kills People." He's played leading roles for such notable directors as Guillermo del Toro, Ken Finkelman, and Kate Melville, starring alongside such luminaries as Jeff...
