There are 6 books in the The Forensic Geology Series series. The newest book is Lands End which came out in 2023.

1
Quicksilver

Book cover of Quicksilver

"A MUST READ for anyone wanting a mystery layered with suspicion, sibling rivalry, family dysfunction, murder, and environmental catastrophes... I couldn't put it down!" (Amazon reader)

A YOUNG MAN DISAPPEARS in the California gold country. He leaves behind a gold-flecked rock and a vial of toxic mercury. He is a…

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2
Badwater

Book cover of Badwater

DEATH VALLEY EARNS ITS NAME when a terrorist threatens to unleash lethal radioactive toxins--in America's most fragile national park.

Forensic geologists Cassie Oldfield and Walter Shaws embark on a perilous mission to find and stop the terrorist. But this hunt pushes them to their limits. The summer desert is brutal.…

3
Volcano Watch

Book cover of Volcano Watch

"An exciting character-driven thriller in which a mountain blows up. What more could you want?" (Amazon reviewer)

NO WAY OUT -- so says the note in the pocket of the murdered mayor.

The volcano beneath her town is seething, and the fate of Mammoth Lakes now rests in the hands…

4
Skeleton Sea

Book cover of Skeleton Sea

A MYSTERY AT SEA plunges forensic geologists Cassie Oldfield and Walter Shaws into deadly waters.

When a boat is found deserted off the California coast, it looks to be a simple fishing accident. But there is nothing ordinary going on here. The geologists track the strange incident to an even…

5
River Run

Book cover of River Run

-- USA TODAY BESTSELLER --

THERE ARE PLENTY OF WAYS TO DIE in the Grand Canyon.

Forensic geologists Cassie Oldfield and Walter Shaws investigate one way: trouble on the canyon's Colorado River. Stranded raft. Life vests unused. Rafters missing.

The only clue to the fate of the rafters is a…

6
Lands End

Book cover of Lands End

DEEP BENEATH THE STREETS OF SAN FRANCISCO, a murder victim is dumped at an archaeological dig. A note pinned to his shirt warns we will bury you.

The question is, who is you?

Desperate to learn what happened--and what might happen next--investigators bring in forensic geologists Cassie Oldfield and Walter…