An ordinary border outpost, from time to time, becomes the scene of mysterious tragedies. There are mass suicides, bloody murders, brutal massacres. Officers and soldiers sometimes fall into violent bouts of madness. And even those few who are lucky enough to survive these terrible incidents can’t properly remember anything… So what’s happening? Is it a sabotage using psychological weapons? Mass chemical poisonings? All these versions seem quite plausible. But then why does a secret services colonel involve a science-fiction writer in the investigation—whom he has every reason to believe is a strong empath and telepath?