Not going to pretend that the sheer size of this is not making it a rather daunting undertaking.
From the Blurb:
It is 1866, and young Walter Moody has come to make his fortune upon the New Zealand goldfields. On the stormy night of his arrival, he stumbles across a tense gathering of twelve local men who have met in secret to discuss a series of unexplained events: A wealthy man has vanished, a prostitute has tried to end her life, and an enormous fortune has been discovered in the home of a luckless drunk. Moody is soon drawn into the mystery: a network of fates and fortunes that is as complex and exquisitely ornate as the night sky. Richly evoking a mid-nineteenth-century world of shipping, banking, and gold rush boom and bust, The Luminaries is a brilliantly constructed, fiendishly clever ghost story and a gripping page-turner.