Garlic. Check. Wooden stake. Check. Crucifix. Check.
Sword. Check. A foolproof plan to defeat the undead?
Um, you know, I had it just a minute ago...

The spook's apprentice
by Joseph Delaney (2004)
First book in the Wardstone chronicles series

The graveyard book
by Neil Gaiman (2008)
The red necklace
by Sally Gardner (2007)
First book in the French Revolution series

Monkey boy
by Donovan Bixley (2014)

The gathering
by Isobelle Carmody (1993)

by Neil Gaiman (2002)

Miss Peregrine's home for peculiar children
by Ransom Riggs (2011)
First book in the Miss Peregrine series
My swordhand is singing
by Marcus Sedgwick (2006)

Cirque du Freak
by Darren Shan (2000)
First book in the Saga of Darren Shan series

The scarecrows
by Robert Westall (1981)