“Superbly written, deftly plotted, and imbued with Sidor’s absolutely phenomenal imagination and inherent understanding of the decaying, sumptuous décor of Jazz Age Arkham that hides a terrifying underside, The Last Ritual is one of the most enjoyable and memorable occult horror thrillers that I have read in a long time.”
– SciFi and Fantasy Reviewer

“As unsettling and disturbing as anything that Lovecraft himself wrote… a complex, gripping roller coaster ride.”
– Amazing Stories

“Sidor is a prince of darkness, steeped in the noir tradition and not giving an inch. He is also bountifully talented.”
– Kirkus Reviews

“A master of the unsettling, and each twist is more grisly and unexpected than the last.”
– Publishers Weekly starred review