Also issued were compilations called "Four Scares in One", which featured four Shivers books in a single volume.

In August 2011, the Shivers series began being republished as eBooks, available from the Amazon Kindle store, iBookstore, Sony Nook and Barnes & Noble.

Spenser is an international journalist born in the United States but living now in England.

Starting in 2002, compilations called "Four Scares in One", which featured four Shivers books in a single volume.

Other children's horror series from the 1990s include Are You Afraid of the Dark?, Bone Chillers, Deadtime Stories, Graveyard School, Spinetinglers, Spooksville , Shadow Zone, and Fright Time.