After finding a break-up letter written by her older sister on the day she died, sixteen-year-old Juniper Lemon becomes determined to find the recipient--only identified as "you"--and in the process uncovers other notes and secrets that demand her attention.

"Mars has always been the lesser twin, the shadow to his sister Caroline's radiance. But when Caroline dies under horrific circumstances, Mars is propelled to learn all he can about his once-inseparable sister who'd grown tragically distant. Mars's genderfluidity means he's often excluded from the traditions--and expectations--of his politically-connected family. This includes attendance at the prestigious Aspen Conservancy Summer Academy where his...