It's crazy to think that The Star Beast now has a version in every medium, starting off as a comic from the 80s before being adapted into audio by Big Finish in 2019, then an onscreen adaptation for the 60th anniversary and now a novelisation. I think that's a first in the franchise! My feelings on the novel are more or less the same, unlike most Target novels of the last few years, this one doesn't really add much or takes it's time with the plot, if anything it goes at the same speed as the episode. The only new additions is including the milkman from The Stolen Earth, each chapter ends with varying documentation (i.e. text messages, UNIT files, emails, galactic Wikipedia etc), the novel also gives a brief nod to Sharon, a lead character from the original story and I liked that the book got more in the head space of Sylvia and her constant anxiety throughout the story of the dangers of Donna's memory returning. It's a solid read.