Wishing for Artemis

Michael's best friend committed suicide. He cannot come to terms with the loss and blames himself for what happened.
 
Neither his love for his younger sister nor the painting he dreamed of dedicating his life to brings him back to his... senses — only his obsession with the sister of the dead friend pulls him back to reality. There are rumors that she is mentally ill, but why does she seem the most rational of everyone he has ever met?
 
He is consumed by a kaleidoscope of wild nights and casual relationships, but sometimes through the thick haze, the shadow of the past emerges — a ghostly figure of a girl who disappeared from the boarding school where Michael studied. The police investigation has hit a dead end — no evidence, no suspects, — but the family of the missing girl hires a private detective who intends to uncover the truth. Even at the cost of his own life.