The Haunting of L. — Howard Norman

From the bestselling author of The Bird Artist, the final book in his Canadian trilogy (with The Bird Artist and The Museum Guard): a novel about spirit photographs, adultery, and murder

It is 1927. Young Peter Duvett has accepted a job as an assistant to the elusive portraitist Vienna Linn, in the remote town of Churchill, Manitoba. Across Canada, Linn has been arranging and photographing gruesome accidents for the private collection, in London, of a
Mr. Radin Heur -- theirs is a macabre duet of art and violence.

When Peter arrives on the night of his employer's wedding, his life changes in ways he scarcely could have imagined. Falling under the spell of Vienna's brilliant and beautiful wife, Kala Murie, the uneasy ménage à trois moves to Peter's native Halifax, where he reluctantly comes to share Kala's obsession with spirit photographs as Vienna's violent art reaches a terrifying climax.