Erimem: The Last Pharaoh, by Iain McLaughlin and Claire Bartlett
Two spinoff series of books about Doctor Who companions have started this year - one is a secret history of the Brigadier between The Web of Fear and The Invasion, the other is a "What Happened Next" set of stories about audio companion Erimem, a young woman who was rescued from the fate of being a forgotten Egyptian pharaoh by the Fifth Doctor and Peri and stayed with them from 2001 until 2008 when she was married off to the new ruler of Peladon. Here she is brought back to adventure by her creators, Iain McLaughlin and Claire Bartlett (with a foreword by Caroline Morris who played her on audio and has now given up acting for other behind the scenes media work). It's a decent enough story; Erimem appears in a 21st century university museum, with convenient amnesia of her adventures since leaving Egypt, and gets swept up into faculty politics with demonic forces and the Battle of Actium. I was entertained and I will get the next in the series.