Harbinger P.I. Books in Order

How many Harbinger P.I. books are there?

Harbinger P.I. has 13 books, released between 2016 and 2025.

Harbinger P.I. Books in Publication Order

The table lists all 13 Harbinger P.I. books in the order they were published, with the release year, the page count where one is on record, and how many independent book listings confirm each title. Catalogue data as of September 2026.

Is there a chronological order for Harbinger P.I.?

No separate chronological order is on record for Harbinger P.I., because none of the book listings this catalogue draws on publishes one; the publication order above is the only order given.

Do you have to read Harbinger P.I. books in order?

You should read the Harbinger P.I. books in publication order, the order of the numbered table above. The catalogue does not record whether each Harbinger P.I. book also stands alone.

Where to start with Harbinger P.I.

Start with Lost Soul (2016), the earliest published title.

What is the newest Harbinger P.I. book?

Thirteen Bones (2025) is the newest Harbinger P.I. book released so far.

Is there a new Harbinger P.I. book coming?

No next Harbinger P.I. book is announced in the catalogue, which is a gap in the listings it merges rather than a sign that the run has ended.

Harbinger P.I. at a glance

Still running

Harbinger P.I. is still running, with a title published as recently as 2025.

Release pace

Harbinger P.I. books have appeared about one a year on average.

Length

1,240 pages across the 5 of 13 books with a recorded length, a median of 236 pages each.

Busiest decade

Most Harbinger P.I. books, 8 of 13, were published in the 2010s.

More books by Adam J. Wright

The author page linked below lists every book in publication order.

• Adam J. Wright books in order 25 books