The review will go up on Monday 18 March.
Here's the Radio Times article on the airdate.
And Neil Gaiman had a blog post from last November listing the full cast, which includes Sir Christopher Lee, Benedict Cumberbatch, and Anthony Head.
Mark your calendars and get ready to listen.
I'll be there with all-y'all.
(Yeah, the Radio Times article has the "first photo." But it's the primary cast and leaves out the Audio Drama God himself, Dirk Maggs. So I'm using the above photo from Gaiman's blog post. The Audio Drama God is in the back. With the mustache and goatee. And rockstar hair.)
(photo: from Neil Gaiman's blog post)