Morgan Matson is the New York Times bestselling author of six books for teens, including Since You've Been Gone and Save the Date, and the middle grade novel The Firefly Summer. She lives in Los Angeles but spends part of every summer in the Pocono Mountains. Visit her at MorganMatson.com.

A perfect summertime read for fans of John Green, Stephanie Perkins, and Sarah Dessen:
It was Sloane who yanked Emily out of her shell and made life 100% interesting. But right before what should have been the most epic summer, Sloane just…disappears. All she leaves behind is a to-do list.
On it, thirteen Sloane-inspired tasks that Emily would normally never try. But what if they could bring her best friend back?
Apple picking at night? Okay, easy enough.
Dance until dawn? Sure. Why not?
Kiss a stranger? Um...
Emily now has this unexpected summer, and the help of Frank Porter (totally unexpected), to check things off Sloane's list.
Who knows what she'll find?
'Some books leave a very real mark on you and Since You've Been Gone is one of those utterly brilliant books' - The Guardian
'A winning blend of touching moments, memorable characters and situational humor takes readers to a surprising revelation at the story's end.' - Kirkus Reviews
'Morgan Matson is the epitome of YA contemporary.' - Ariel Bissett, Booktuber and blogger