Disquiet (Russian: Беспокойство, romanized: Bespokoystvo) is a 1965 science fiction novel by Soviet-Russian writers Boris and Arkady Strugatsky, set in the Noon Universe.
After completing the first draft, the authors felt a need to take the novel in a different direction, which resulted in the creation of Snail on the Slope.
In 1995, feeling the need to expose it to a wider readership, Boris Strugastky published it online (but it has been taken offline by his heirs).
While observing the lake, Paul thinks he sees a human in the water, and records a video of the scene.
The villagers are in foggy states of mind but have abilities to "grow" themselves food, clothes, and houses; and control the flora around them.
He encourages two villagers, Fist and Broken Leg, to make a trip to The City, a mysterious place, where Athos hopes to get information about how to return.
They end up in another unfamiliar village where Athos meets people he recognizes as Karl and Valentine, other biologists from the base.
He is unable to talk to them, as some uncontrollable fear compels him and Nava to run away from the village, now engulfed in violet fog.
The front is allegedly so biologically active that any living creature (even the Glorious Helpmates, who are protected) are likely to die there.
He returns to his village, where he again encourages Fist and Broken Leg who unite and travel to the base at Devils Crag.
Athos now understands that the villages will disappear because of Overcoming (the process led by the Glorious Helpmates) and wants to prevent this mass murder.
Mikhail "Athos" Sidorov also appears in the chapters "The Conspirators" and "The Assaultmen" of Noon: 22nd Century as a schoolkid and a biologist; in Space Mowgli as the Ark Project head; in the chapter "Defeat" of Noon: 22nd Century (that appears not in all variants of the text) as a head of small mechanical embryo testing group; in The Time Wanderers as a president of "Ural-North" sector of COMCON-2.
[1] There are some striking similarities between the 2009 James Cameron's film Avatar and the "forest" part of the novel, as attested by Boris Strugatsky himself.