This audio is top tier. It is so immersive. Through a combination of interesting worldbuilding, increadible sound design and clever exposition, it is hard to avoid being enveloped by the setting and the plot. The entire plot is conveyed through radio broadcasts which is very creative and works very well. This audio is tense, exciting and full of mystery. My only gripe is that the ending is a little bit rushed.

This is also a good standalone audio. All you need to know is that the Seventh Doctor is travelling with companions Ace and Hex (Hex being original to the Big Finish audios).