Boy meets girl; boy falls in love (and had wild, non-stop sex) with girl; boy loses girl... when they discover they are brother and sister! But when he learns that he's the victim of the ultimate case of mistaken identity, the lovesick young man -- whom everyone still thinks is after some taboo thrills -- must race across the country to stop her from marrying another man.
Say It Isn't So (2001) is available to stream online in HD across all devices — mobile, tablet, and desktop.
Watch Say It Isn't So Full Movie HDTop Billed Cast
View All
Popular Movies Coming Soon
12 upcoming films
Spider-Man: Brand New Day
Spider-Man: Brand New Day
Super Troopers 3
Super Troopers 3
Insidious: Out of the Further
Insidious: Out of the Further
Resident Evil
Resident Evil
Street Fighter
Street Fighter
Clayface
Clayface
Ice Cream Man
Ice Cream Man
ゴジラ-0.0
Godzilla Minus Zero
रामायण
Ramayana: Part One
Avengers: Doomsday
Avengers: Doomsday
Lords of War
Lords of War
Riddick: Furya
Riddick: Furya
Upcoming Comedy Movies
3 titles
More by Cast
Chris Klein & Heather Graham
American Pie
American Pie
Just Friends
Just Friends
Election
Election
American Reunion
American Reunion
Rollerball
Rollerball
Street Fighter: The Legend of Chun-Li
Street Fighter: The Legend of Chun-Li
Fear Street: Prom Queen
Fear Street: Prom Queen
The Long Weekend
The Long Weekend
The Hangover Part III
The Hangover Part III
Scream 4
Scream 4
Austin Powers: The Spy Who Shagged Me
Austin Powers: The Spy Who Shagged Me
Lost in Space
Lost in Space
Comments & Discussions
Join the conversation
Sign in to leave a comment
No comments yet
Be the first to share your thoughts!
Recommended
Because you liked Say It Isn't So
The Other Side of Midnight
The Other Side of Midnight
ഖല്ബ്
Qalb
The Arrangement
The Arrangement
En plein cœur
In All Innocence
Mandingo
Mandingo
मोहब्बतें
Mohabbatein
La Bête
The Beast
Mothering Sunday
Mothering Sunday
Petals on the Wind
Petals on the Wind
Depois do Universo
Beyond the Universe
Search for movies, TV shows, collections, manga, or people
Trending Now