Its nice to have Caroline John back as Liz Shaw, - I say that about a lot companions I think, but its the ones who appear less often that makes it extra special.

Missing information in UNIT files leads to Liz Shaw being questioned, and she recalls when a time experiment went wrong and a goup of people were hell bent on a new world order.

Its set sometime after Liz leaves UNIT, and she meets up with the Doctor - having listened to Intelligence for War earlier this year it feels a little repetitive as it was a similer set up there.

Its a bit jumpy at times, a few lines of narration and suddenly our heroes are in a different situation facing new threats, its almost a case of blink and you miss it. So if you're easily distracted or not paying attention you could easily be lost. It does feel like a longer story condensed, with the action skipped - which for audio is understandable.

There's nothing particularly new here, standard tropes - a nice bit about Liz and mobile phones.

In comming to write this review I found that its kind of a prequel to the Sixth Doctor Lost Adventure Leviathan, which I listened to just over a year ago - not that I remembered the connection. So its fine as a stand alone.

Its great for having Caroline John, and does what it says on the tin, nice entertainment for an hour.