Skip to content

Every purchase supports a cleaner ocean. Learn more

Join our rewards program to start earning doubloons on every purchase.

Fiction
- Best Sellers
  
  Fantasy
  Thrillers
  Literary
  Classics
  Romance
  Action & Adventure
  View All
- Subjects (A-M)
  
  Apocalyptic
  Coming of Age
  Crime
  Dystopian
  Gothic
  Horror
  LGBTQ+
- Subjects (N-Z)
  
  Occult & Supernatural
  Political
  Psychological
  Science Fiction
  Sports
  War & Military
  Women
Nonfiction
- Best Sellers
  
  Business & Economics
  Health & Fitness
  History
  Music
  Philosophy
  Self-Help
  View All
- Subjects (A-M)
  
  Art
  Biography & Autobiography
  Computers
  Cooking
  Education
  Gardening
  House & Home
- Subjects (N-Z)
  
  Political Science
  Psychology
  Social Science
  Sports & Recreation
  Technology & Engineering
  Travel
  True Crime
Young Adults
- Popular YA
  
  Romance
  Graphic Novels
  Coming of Age
  Adult Fantasy
  Thriller & Suspense
- Fiction
  
  Best Sellers
  Action & Adventure
  Science Fiction
  Dystopian
  Horror
  Contemporary
- Nonfiction
  
  Best Sellers
  History
  Political Science
  Science & Nature
  Mental Health & Wellness
  Biography & Autobiography
Kids
- Kids Fiction
- Kids Nonfiction
Collections
The Crows Nest

Best Sellers
- Fantasy
- Thrillers
- Literary
- Classics
- Romance
- Action & Adventure
- View All
Subjects (A-M)
- Apocalyptic
- Coming of Age
- Crime
- Dystopian
- Gothic
- Horror
- LGBTQ+
Subjects (N-Z)

Best Sellers
Subjects (A-M)
Subjects (N-Z)

Popular YA
Fiction
Nonfiction

Kids Fiction

Kids Nonfiction

Account

Your cart is empty

Have an account? Log in to check out faster.

Continue shopping

Home
Ethan Knight

Ethan Knight Books

Skip to results list

Filters

1 item

Sort

Sort Most relevant

Featured

Most relevant

Best selling

Alphabetically, A-Z

Alphabetically, Z-A

Price, low to high

Price, high to low

Date, old to new

Date, new to old

Column grid

Active filters:

Column grid

Filter

Active filters:

Sort

Sort Most relevant

Featured

Most relevant

Best selling

Alphabetically, A-Z

Alphabetically, Z-A

Price, low to high

Price, high to low

Date, old to new

Date, new to old

The PDA Effect: An Autistic Teenager's Guide to Demand Avoidance - Paperback

The PDA Effect: An Autistic Teenager's Guide to Demand Avoidance - Paperback

The PDA Effect: An Autistic Teenager's Guide to Demand Avoidance - Paperback

By Ethan Knight

About Ethan Knight Books

Recently Viewed

Sailing the seven seas since 1733 in search of the greatest weapon: knowledge.

Black & Barhe Black & Barhe

Who We Are
Our Story
Our Purpose
Our Crew
Our Climate Pledge

Navigate Navigate

Fiction
Nonfiction
Young Adult Fiction
Young Adult Nonfiction
Kids Fiction
Kids Nonfiction
All collections

Information Information

Help & Support
Used Book Return Program

Legal Legal

Accessibility Statement
Don’t Sell My Personal Information

© 2026 Black & Barhe Bookstore

Privacy policy
Refund policy
Terms of service
Shipping policy
Contact information

Search

Search

Products

!Eureka! - Hardcover

!Eureka! - Hardcover

$37.78

Regular price Sale price $37.78
"A Most Infamous Young Swindler": The Short Tragic Life of Thomas Langrel Harris - Paperback

"A Most Infamous Young Swindler": The Short Tragic Life of Thomas Langrel Harris - Paperback

$26.98

Regular price Sale price $26.98
"Ancient Memories" - Paperback

"Ancient Memories" - Paperback

$24.46

Regular price Sale price $24.46
"Before You Say Goodbye" - Paperback

"Before You Say Goodbye" - Paperback

$31.66

Regular price Sale price $31.66