Check out my review of Interfictions 2: An Anthology of Interstitial Writing. Here’s the first paragraph:
Interstitial fiction is imaginative writing that slips through the cracks between literary genres. It’s an umbrella term under which numerous stylistic approaches like new weird, slipstream, fantastica, liminal fantasy, transrealism, and many more may fall. Though these terms lack precision, they do bear some resemblance to more established genres, using familiar science fiction tropes like spaceships and aliens, time travel and alternate histories; fantasy tropes like ghosts, fairies, as well as mystery and romance conventions. Interstitial fiction is distinguished by how it blurs the boundaries between genres and, if ever placed in one of these slots, rests uncomfortably. It blends the realistic and the fantastic in such a way that everything is defamiliarized, or where everything is (borrowing a term coined by Russian Formalist Viktor Shklovsky) “enstranged.” Paradoxically, it is its “in-betweeness” that defines it.