Home
My Books
Browse ▾
Recommendations
Choice Awards
Genres
Giveaways
New Releases
Lists
Explore
News & Interviews
Genres
Art
Biography
Business
Children's
Christian
Classics
Comics
Cookbooks
Ebooks
Fantasy
Fiction
Graphic Novels
Historical Fiction
History
Horror
Memoir
Music
Mystery
Nonfiction
Poetry
Psychology
Romance
Science
Science Fiction
Self Help
Sports
Thriller
Travel
Young Adult
More Genres
Community ▾
Groups
Quotes
Ask the Author
Sign In
Join
Sign up
View profile
Profile
Friends
Groups
Discussions
Comments
Reading Challenge
Kindle Notes & Highlights
Quotes
Favorite genres
Friends’ recommendations
Account settings
Help
Sign out
Home
My Books
Browse ▾
Recommendations
Choice Awards
Genres
Giveaways
New Releases
Lists
Explore
News & Interviews
Genres
Art
Biography
Business
Children's
Christian
Classics
Comics
Cookbooks
Ebooks
Fantasy
Fiction
Graphic Novels
Historical Fiction
History
Horror
Memoir
Music
Mystery
Nonfiction
Poetry
Psychology
Romance
Science
Science Fiction
Self Help
Sports
Thriller
Travel
Young Adult
More Genres
Community ▾
Groups
Quotes
Ask the Author
Cathrina Constantine’s Reviews
>
My Grandpa has a Time Machine
> Status Update
Cathrina Constantine
finished reading
My Grandpa has a Time Machine
—
Nov 12, 2025 06:06PM
Like
Post a comment »
Comments
No comments have been added yet.
post a comment »
Add a reference:
Book
Author
Search for a book to add a reference
add:
link
cover
Author:
add:
link
photo
Welcome back. Just a moment while we sign you in to your Goodreads account.
