30 books • 5 series
Book #1: Terrifying Love
Book #3: Golden Tattoo
Book #2: The Door
Book #5: Sinister Melody
Book #6: The Keeper
Book #3: The Gathering
Book #4: Suicide Town
Book #1: Notfalldurchsage
Book #2: Verlassene Strassen
Book #3: Quarantäne-Terror
Book #4: Verwesendes Refugium