Ordinary ghosts
Eireann Corrigan
Emil feels invisible at school and at home. When he finds a master key to his private school, he sneaks in to explore, and finds a reason to become visible.

by Tricia Rayburn (2011)
Returning to Boston for her senior year of high school after the sudden death of her older sister, seventeen-year-old Vanessa must ward off her transformation into a full-fledged siren while also trying to handle applying to college, a long-distance relationship, and the mysterious return of the sirens she thought she had killed.
Eireann Corrigan
Emil feels invisible at school and at home. When he finds a master key to his private school, he sneaks in to explore, and finds a reason to become visible.
Dawn Metcalf
Some things lie beneath the surface. Invisible. With the power to change everything. Joy Malone wants it all--power, freedom and the boyfriend who loves her. Yet when an unstoppable assassin is hired to kill her, Joy learns that being the girl with the Sight comes with a price that might be too high to pay. Love will be tested, lives will be threatened, and everyone Joy knows and cares about will be affected by her decision to stand by Ink or to leave the Twixt forever. Her choice is balanced on a scalpel's edge and the consequences will be more life-altering than anyone can guess.
Wendy Delsol
Katla's hopes of dodging unfinished business during her senior year are dashed by the arrival of two "Icelandic exchange students," Marik and Jinky, who have come to collect Katla's frail baby sister and take her to the water queen.
L.J. Smith
"When a vampire from Katherine's past sets out to destroy the Salvatore brothers, Stefan and Damon must join forces to defeat their foe"--