The Witch's Garden: Plants in Folklore, Magic and Traditional Medicine

The Magic of Mushrooms: Fungi in Folklore, Superstition and Traditional Medicine

What a Dog Knows: A Novel

The Arbornaut: A Life Discovering the Eighth Continent in the Trees Above Us

The Dog I Loved: A Novel

Poached: Inside the Dark World of Wildlife Trafficking

The Unity of Science: Exploring Our Universe, from the Big Bang to the Twenty-First Century

The Wonder of Lost Causes: A Novel

The Killing Lessons: A brutally compelling serial killer thriller

Original Sin: A Sally Sin Adventure

Lovemurder: A Spine-Chilling Serial-Killer Thriller

The Underdogs: Children, Dogs, and the Power of Unconditional Love

What You Don't Know: A Novel

You Should Have Known

With Patience and Fortitude: A Memoir

What You Don't Know