Authority (2014 (the sequel to Annihilation (the book))) is like what if instead of Aliens, we got a sequel to Alien that was basically Michael Clayton but set at whatever vestigial government office is nominally in charge of dealing with the bullshit scifi industrial disasters Weyland-Yutani is constantly causing. Ripley is technically present, but doesn't want to talk to any of the other principal characters, and has fairly little screen time until the final 20 minutes of the movie, when things start getting weirder fast.
Does it work as a novel? Kind of. Does it work as a sequel to Annihilation? Absolutely not. But i do kind of have to respect the wild audacity of that kind of genre swing. And despite mostly not working it has some of my absolute favorite scenes in that series, none of which feel like they belong to the book at all.
