By John Walsh. "The Curious Circumstances Behind The Mystery of Marie Roget." Walsh -- different one, a "former newspaperman" -- dug into the Mary Rogers case, and based on his research was evidently able "to definitively disprove" that Poe had solved the Rogers murder via Roget.
A well-kept, large university-press hardcover; some wear to the jacket, but it's been wrapped nicely at a previous stop. Clean pages, only mild toning. A nice pick-up for the Poe scholar/completist.