If love and passion can prove so brittle against greed and ambition, what hope for truth and integrity? Overwrought and tormented by a career-threatening investigation progressing in London, investment banker, Marcus Flint, seeks solace at a remote Swiss hotel – there is much more at stake – if sinister episodes from his past in Singapore become exposed, they will destroy not just his career but rip apart his family and his life.Blind to the real reasons for his absence, his wife, Emma, is confused but keen to help, not least because Marcus rescued her from her own traumas years ago. As the London review threatens to turn global, disaster looms. Marcus feels compelled to write to Emma, to explain his actions – the ripple effects of greed, ambition and deceit cascading out of control, ultimately confessing to what he has done – his ‘darkest trade’. It’s a letter he hopes he never has to send.