They really shouldn't miss [[Tales of Death and Dementia by Edgar Allan Poe and Gris Grimly]], which takes four slightly abridged Poe stories and illustrates them wonderfully and almost to graphic novel status. If they like high language and Gothic drama, I think they'd also enjoy [[The Vanishing of Katharina Linden by Helen Grant]]. [[The Undrowned Child by Michelle Lovric]] is an alternate world historical fantasy, but I think it would also appeal.