for Dead Is Just a Dream by Marlene Perez
The people of Nightshade, California, are dying in their sleep, and fifteen-year-old paranormal warrior Jessica Walsh is determined to find the killer . . . or killers. Justice isn't the only thing on Jessica's mind, however. Some days she's not sure which is worse-having a creepy clown lurking outside her window or having her rock star boyfriend's hot ex-girlfriend drop by for a surprise visit. Could the ex be behind the dastardly doings in town? Or could the disturbing works of a strange painter somehow at the heart of the mystery? Jessica is losing sleep-but she's got to figure out what's going on before the night terrors strike again.
Publisher description retrieved from Google Books.