Jake and Lily are twins. Even though they seem pretty different—Jake is the calm one and Lily has a temper; Lily is obsessed with trains and Jake collects cool rocks—they feel exactly the same, almost like two halves of one person. When one of them gets hurt, the other can feel it. They can communicate without words. And mysteriously, every year on their birthday, they sleepwalk to a train station in the middle of the night.

But the year they turn eleven, everything changes. Their parents announce it’s time for separate bedrooms, and Jake starts hanging out with a pack of boys on the block. Lily is devastated—not to mention really, really mad. And as she struggles to make friends and get a life apart from her twin, Jake finds himself dealing with a neighborhood bully and has to decide what kind of person he really is.

Beloved author Jerry Spinelli has written another perfectly on-target, humorous, and brilliant story about the struggles of growing up and discovering who you are.

This is a story about me, Lily.
And me, Jake.
We're twins and we're exactly alike.
Not exactly!
Whatever. This is a book we wrote about the summer we turned eleven and Jake ditched me.
Please. I just started hanging out with some guys in the neighborhood.
Right. So anyway, this is a book about
goobers and supergoobers
bullies
clubhouses
true friends
things getting built and wrecked and rebuilt
and about figuring out who we are.
We wrote this together
(sort of)
so you'll get to see both sides of our story.
But you'll probably agree with my side.
You always have to have the last word, don't you?
Yes!