A warning from a dying alien leads the Doctor and Bernice to Earth. However Earth in this time period is not a good place to be.
The murder rate is rising, but the killers seem to be acting without motive. The TARDIS crew's investigations lead them to a military training planet, a prison inside a star, and a terrifying old foe.
And all the time they are being pursued - by two dogged Adjudicators who've stumbled onto a terrifying conspiracy. Chris Cwej and Roz Forrester.
Things will never be the same again.
Based on the 1995 New Adventures novel by Andy Lane.