Andorra Pett has left the Oort Cloud Café; she's back on Mars, a place she vowed she'd never visit again. She's gone back for her friend Maisie's funeral. Everyone thinks it was suicide but the more she learns, the less sure she is. Things don't add up and she realises that the whole story doesn't make sense. Something else is going on and the questions soon multiply. Why would Maisie kill herself if she'd just had good news? Why is Andi being followed? What was the mystery bequest? When she begins to find the clues that Maisie has left for her, it becomes a race against time. Andi must work out what's going on and hope that she can get out alive. What could possibly go wrong?