When I Cast Your Shadow by Sarah Porter

A teenage girl calls her beloved older brother back from the grave with disastrous consequences.

Dashiell Bohnacker was hell on his family while he was alive. But it's even worse now that he's dead ....

After her troubled older brother, Dashiell, dies of an overdose, sixteen-year-old Ruby is overcome by grief and longing. What she does not know is that Dashiell's ghost is using her nightly dreams of him as a way to possess her body and to persuade her twin brother, Everett, to submit to possession as well.

Dashiell tells Everett that he has returned from the Land of the Dead to tie up loose ends, but he's actually on the run from the forces crueler and more powerful than anything the Bohnacker twins have ever imagined...*