Dead Letters, by Caite Dolan-LeachRead about another entry on the list.
In Dolan-Leach’s debut novel, Ava Antipova returns home to upstate New York when her twin sister, Zelda, dies in a barn fire. Ava arrives suspicious; the dramatic death is precisely what Zelda would have chosen for her demise. As Ava navigates her unhappy, alcoholic family and an old school flame, she discovers Zelda’s burner phone—and begins to receive emails and texts from her sister. What follows is a scavenger hunt and puzzle as Ava chases down clues, which is convenient considering her field of study involves literary mysteries. As Ava creeps towards the solution, there are false starts and red herrings, but the picture that slowly coalesces is affecting and forces the reader to reevaluate the assumptions they began with.