30 books • 6 series
Book #1: The Ghost House
Book #2: Secrets Of The Shadows
Book #3: The Forgotten Cottage
Book #4: The Lake House
Book #5: The Girls In The Woods
Book #1: The Girl in the Grave
Book #2: The Girls in the Lake
Book #2: Dying Breath
Book #1: Dark House
Book #1: The Haunting on West 10th Street
Book #2: Her Lost Soul
Book #3: The Girls on Floor 13
Book #1: One Left Alive
Book #2: The Killer's Girl
Book #3: The Hiding Place
Book #7: Silent Angel
Book #8: Their Burning Graves