There are some stories from any show that only a huge fan of that show can really enjoy and appreciate. Zagreus is one of those stories, because only a huge Doctor Who fans can truly appreciate or understand this multi-layered and in-joke filled story. Outside of that, Zagrues gives Peter Davison, Colin Baker, Sylvester McCoy, Nicholas Courtney and their companions a chance to step out of their usual roles to play characters that sometimes differ wildly from their established characters on the show. Add to that Don Warrington's Rassilon, Lalla Ward's Romana, Louise Jameson's Leela, K9, an posthumous appearance by a former Doctor, and terrific performances from India Fisher and Paul McGann and Zagreus becomes a classic Doctor Who adventure celebrating 40 years of journeys through time and space. Sure new fans might have a problem making heads or tails of it (I know I did when I first heard it about a year ago) but more serious fans will find plenty to listen to and might even come back for another listening or two.