The U.S. paperback edition of A Reunion of Ghosts is available at your local bookstore or from any online booksellers including these:
Barnes & Noble

If you’d like a signed copy, just call or email my local independent bookstore, A Mystery to Me, and we’ll get an inscribed book out to you asap.

If you’re in England, you can buy A Reunion of Ghosts at your favorite bookstore (including  Waterstones, where it’s a New Year Book Club selection) or online.

A Reunion of Ghosts is also available in hardcover, e-book, and audio editions. It’s also forthcoming in Polish, Hebrew, and Chinese.