“With all human culture arguably evolved from Palaeolithic shamanism, Bebergal engagingly explores the uncanny overlap between an ancient landscape of occult ideas and today’s techno-saturated environment, from Victorian table-tilting to the digitally remastered voices of the dead; from confidence tricksters, through the desperate or delusional, to the artists and visionaries currently exploring this marvelous, ectoplasm-damp material. An absorbing, comprehensive guide to the high-definition séance parlor of the modern world, and a timely reminder that, in contemporary civilization, we are never more than a couple of centuries away from an alchemist.” (Alan Moore)

“Even the most well-read esoteric scholar will find some new and fascinating bit of lore in Bebergal’s book...an engrossing read.... And as far as tour guides to the occult underworld go, you couldn’t ask for a better Virgil than Bebergal: his prose is warm, clever and erudite without being alienating. Read it with as open a mind as he wrote it and you’ll be bound to pick up a few interesting frequencies on your wavelength.” (Fortean Times)

“Bebergal dives into the relationship between technical and occult imagination and comes up with something profound about the human experience. By turns funny, spooky, thought-provoking, and moving, Strange Frequencies is brilliant work.” (Daniel Abraham, New York Times best-selling coauthor of the Expanse series)