The Saga of Darren Shan by Darren Shan

Cirque Du Freak,The Vampire’s Assistant, Tunnels of Blood, Vampire Mountain, Trials of Death, The Vampire Prince, Hunters of the Dusk, Allies of the Night, Killers of the Dawn, The Lake of Souls, The Lord of Shadows, Sons of Destiny
Demonata Series by Darren Shan

Lord Loss, Demon Thief, Slawter, Bec, Blood Beast, Demon Apocolypse, Death Shadow, Wolf Island, Dark Calling, Hell’s Heroes
Fear Street Series by R.L. Stine

All-Night Party, Darkest Dawn, Killer’s Kiss, Midnight Games, Moonlight Secrets, The Rich Girl
Cliff McNish

Breathe: A Ghost Story
Darkside Series by Tom Becker

Darkside, Lifeblood, Nighttrap

Enemy Series by Charlie Higson

The Enemy, The Dead, The Fear, The Sacrifice, The Fallen, The Hunted, The End