<blockquote>Polly's comfortable back at The Duchess, with her well-worn routines and her well-worn life, and she's . . . absolutely not pining for her best friend, Mal, who forgot – hah! – to say goodbye before vanishing after the last peace negotiations. For the second time. Not that she's counting.
But when Commander Vimes personally asks her to come to Ankh Morpork and learn the ways of the City Watch, for the good of Borogrovia, she feels she can't say no. She's forgotten Mal, she absolutely has. But then a mysterious someone starts sending her coffee. And that's only the beginning . . .</blockquote>
➤ I approve of this fic's opinions on Mal's gender