Ghosts of Harvard : a novel / Francesca Serritella.

"Cadence "Cady" Archer arrives on Harvard's campus searching for answers about her brother, a schizophrenic genius who leapt from his dorm room window the year before. Eric's brilliance overshadowed Cady growing up, but she worshipped and adored him--even as he became more unstable, retreating deeper into his secretive work on multidimensional spacetime and isolating himself from everyone around him. Losing Eric has left a black hole in Cady's life, and while her choice to walk the same path threatens to break her family apart, she is driven to know why Eric killed himself. As Cady struggles under the enormous pressure that comes with being at Harvard, she begins to investigate her brother's life on campus. What was it that caused Eric to spiral into an irretrievable madness--the paranoia, the delusions, the illusory enemies--after he had been doing so well? Soon, her prying turns up clues that grow increasingly sinister. And then, as her suspicions mount, Cady begins to hear voices herself: three ghosts that walked the hallowed halls of Harvard, each from a different era of American history. That's when the panic sets in. Does she share Eric's illness, or are these voices real? And if she listens to these ghosts, will they lead to her brother--and the truth--or will they lead her down a path of her own destruction?"--