Here it is, a conclusion which for once can be called cataclysmic without succumbing to hyperbole.  This will leave you questioning the nature of reality in ways that no other work of fiction has, at least since that of Philip K Dick's...

Providence is one of Alan Moore's (and Jacen Burrows's) most intriguing and engrossing works. It's a complex riff on the life and works of H.P. Lovecraft which effects a slow, very (very) gradual reveal of the the forces at work just out of sight of those who don't know how –or where – to look.  The series shows readers one version of the events that are transpiring on the page, while also relaying what the protagonist makes of them, through his diary entries that appear as addendum in each issue (this aspect of the seires is subjected to some shifts here, in this concluding volume, but we can't tell you any more...).  This tension between versions is the signature accomplishment of this series, which – like Watchmen, with which it also has other things in common – runs 12 issues, of which this volume collects the final four (#9 - #12).