I Will Find You Again by Sarah Lyu

All the Bright Places meets Ace of Spades in this smart, twisty teen thriller about a girl who can't stop pushing herself to be the best—even after losing her best friend and the love of her life.
Welcome to Meadowlark, Long Island—expensive homes and good schools, ambition and loneliness. Meet Chase Ohara and Lia Vestiano: the driven overachiever and the impulsive wanderer, the future CEO and the free spirit. Best friends for years—weekend trips to Montauk, sleepovers on a yacht—and then, first love. True love.

But when Lia disappears, Chase's life turns into a series of grim snapshots. Anger. Grief. Running. Pink pills in an Altoids tin. A cheating ring at school. Heartbreak and lies. A catastrophic secret.

And the shocking truth that will change everything about the way Chase sees Lia—and herself.