Ultraviolet by R.J. Anderson

Alison wakes up strapped to a hospital bed, covered with scratches and bite marks, and with no memory of how she got there. She's told that she was admitted by her mother after she had a psychotic attack and attempted self-harm. She also confessed to murdering Tori, a student she had an argument with just before the girl disappeared. Alison's story, however, is unbelievable, and the timeline just doesn't add up, so the police are baffled. Alison is transferred to a care facility, and as her memories begin to come back she fears that she really did murder Tori . . . with the power of her crazed mind.

This novel is broken into three parts. The first two cover Alison's breakdown, flashback memories, and the time she spends recovering in a psychiatric care facility. It's there we learn about her synesthesia, her strained relationship with her mother, and the reasons for her anti-social behavior. There's also an element of suspense as Alison tries to put her memories together cohesively and find out if she did cause Tori's disappearance, and if so, how. The third part takes a bizarre left turn into science fiction as Alison is pulled through a wormhole and lands in a mostly abandoned alien research facility. Though all of the three parts are interesting and well-written, the small hints given in the first two parts really don't prepare the reader for the third. I finished it, but admittedly skimmed the last few chapters in disbelief.