Murderbot, the rogue security construct who long ago hacked its own governor module and now guards the humans it claims to merely tolerate, is escorting Dr Mensah's family, including her sharp teenage daughter Amena, when their ship is seized by a hostile transport and dragged through a wormhole. The attacker turns out to be crewed by grey, uncanny humanoids and steered by an intelligence Murderbot recognises: ART, the vast, imperious research vessel it once counted as a friend, now desperate and willing to endanger everyone to recover something it has lost. Stranded on a contaminated colony where the population has splintered into warring factions, Murderbot must work alongside the machine that betrayed it. Wells expands her novella sequence to full length without losing the deadpan first-person voice that made it beloved, balancing action against a genuinely tender study of friendship between two artificial minds. It is a story about autonomy, loyalty, and the terror of caring about people who can be taken from you.
