There are 9 books in the GREYWALKER series. The newest book is Revenant which came out in 2014.

1
Greywalker

Book cover of Greywalker
Meet Harper Blaine. She also sees dead people...Harper Blaine is a small-time private investigator trying to earn a living when a low-life savagely assaults her, leaving her for dead. For two minutes, to be precise. When Harper comes to in the hospital, she begins to feel a bit ...strange. She…
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2
Poltergeist

Book cover of Poltergeist
View our feature on Kat Richardson's Greywalker.

Harper Blaine was your average small-time PI until she died-for two minutes. Now she's a Greywalker-walking the thin line between the living world and the paranormal realm. And she's discovering that her new abilities are landing her all sorts of "strange" cases.

In…

3
Underground

Book cover of Underground

Harper Blaine was just an average small-time private investigator until she died - for two minutes. Now Harper is a Greywalker, walking the thin line between the living world and the paranormal realm. And her new abilities are landing her all sorts of strange cases.

In the cold of winter,…

4
Vanished

Book cover of Vanished

For Seattle investigator Harper Blaine, her own case may prove the most difficult to solve. Why did she - as opposed to others with near-death experiences - become a Greywalker? When Harper begins digging into her own past, she unearths some unpleasant truths about her father's early death as well…

5
Labyrinth

Book cover of Labyrinth

Just back from London, Harper picked up some new skills while she was away. But instead of taking the time to hone them, she'd rather focus on what's important. Like finding the two-bit perp who 'killed' her. She's convinced he's a valuable clue in the puzzle of her past and…

6
Downpour

Book cover of Downpour
Harper Blaine is on the mend, but evil never rests-in the latest novel from the national bestselling author of Labyrinth.

After being shot in the back and dying-again- Greywalker Harper Blaine's only respite from the chaos is her work. But while conducting a pre-trial investigation in the Olympic Peninsula, she…

7
Seawitch

Book cover of Seawitch
Harper Blaine was your average small-time PI until she died—for two minutes. Now Harper is a Greywalker, treading the thin line between the living world and the paranormal realm. And she’s discovering that her new abilities are landing her all sorts of “strange” cases.

A quarter century ago, the Seawitch…

8
Possession

Book cover of Possession
Harper Blaine was your average small-time PI until she died—for two minutes. Now Harper is a Greywalker, treading the thin line between the living world and the paranormal realm. And she’s discovering that her new abilities are landing her all sorts of “strange” cases.
 
When a comatose woman suddenly wakes…

9
Revenant

Book cover of Revenant
Harper Blaine was your average small-time PI until she died—for two minutes. Now Harper is a Greywalker, treading the thin line between the living world and the paranormal realm. And these abilities are landing her all sorts of “strange” cases....

Turmoil, sickness, and destruction are sweeping through Europe—and its effects…