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Series · thriller

Cash & Colcord

by Douglas Preston

The Cash & Colcord series by Douglas Preston has 2 known books (2 published) and is best read in publication order, starting with Extinction (2024). The latest book with a fully recorded publication date is Paradox. The next announced book, Resurrection, is due 1 June 2027.

Books
2 known books (2 novels)
Published
2
First published
2024
Status
ongoing
Shelved under
Thriller
Last checked

Start here: Extinction (2024) — then read straight through in publication order.

Book one

Cover of Extinction

Extinction (2024)

Reading order

The date order of published books and any announced future entries — the default way to read the series.

  1. Extinction

    Novel

    Douglas Preston's first solo novel in a decade, Extinction (April 2024) runs 384 pages and launches CBI Agent Frankie Cash and Eagle County Sheriff Jim Colcord's investigation of a murder at a luxury Colorado safari resort stocked with genetically resurrected woolly mammoths.

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  2. Paradox

    Novel

    Paradox (April 2026), co-written with Preston's daughter Aletheia Preston, is a somewhat shorter 341 pages and sends Cash and Colcord back into the Colorado wilderness after the resort's resurrected Neanderthals escape and a fresh trail of killings ties to a secret society.

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About the Cash & Colcord series

CBI Agent Frankie Cash and Eagle County Sheriff Jim Colcord investigate crimes in a near-future Colorado where de-extinction science has gone mainstream -- starting with a murder at a luxury safari resort stocked with genetically resurrected woolly mammoths and Ice Age megafauna. Douglas Preston, writing in the scientific-speculation mode he also used for the Wyman Ford series, launched the series solo with Extinction (2024), his first solo novel in a decade, before co-writing the sequel Paradox with his daughter Aletheia Preston.

Paradox (2026) follows Cash and Colcord into the Colorado wilderness again, with the resort's resurrected Neanderthals now loose in the mountains and a fresh trail of bizarre killings tied to a secret society.

Frequently asked questions

How many Cash & Colcord books are there?

Two: Extinction (2024) and Paradox (2026).

What order should I read the Cash & Colcord books in?

Extinction first, then Paradox, which continues the story directly.

Who writes the Cash & Colcord series?

Douglas Preston wrote Extinction solo; Paradox is co-written with his daughter, Aletheia Preston.

Is Cash & Colcord connected to Douglas Preston's other series?

No direct crossover -- it's a separate near-future series distinct from Pendergast, Gideon Crew, Nora Kelly and Wyman Ford.

Is there a third Cash & Colcord book coming?

No further title had been announced beyond Paradox (2026) as of this writing.

Reading order last verified .