'Professor Gwyndon, my name is John Henry Wilson. God has sent me to kill you'. 'NATURAL SELECTION' is a philosophical thriller starring Simon Callow ('Four Weddings & A Funeral') and James D'Arcy ('Master and Commander'). When atheist professor Ted Gwyndon returns home from a book tour little does he know an intruder awaits; but John Henry isn't just a religious fanatic, he's a man with a plan. As the two struggle to gain the upper hand each reveal secrets that call into question the nature of belief, memory and compassion. A superbly acted drama with a killer twist.