A new book on demons and angels in Neoplatonism has just been reviewed in BMCR by Cesare Sinatti – you can read the review here. The book is:

Luc Brisson, Séamus O’Neill, Andrei Timotin (ed.), Neoplatonic Demons and Angels. Studies in Platonism, Neoplatonism, and the Platonic tradition, volume 20. Leiden; Boston: Brill, 2018. Pp. ix, 294. ISBN 9789004374973. €138,00.

There is more info (inc. TOC) at its official website over at Brill, here. Looks like great fun.