The stories “The Music Maker”, “What a Wonderful School” and, of course, the legendary “Monument” are the first things that come to mind for the domestic reader when the name Lloyd Biggle is mentioned. However, in reality, this master of American science fiction is also known as the author of completely different works. Works, among which the most popular is the cycle about the adventures of Jan Darzek - a private detective of the future, who, voluntarily or unwittingly, takes on the investigation of the most incredible cases!.. The action takes place in 1986. The UniTel company invented a matter transmitter, and then built the first instantaneous network on Earth transport. But the company faces constant sabotage of its activities. First, the transmitters explode, then the passengers disappear. Detective Jan Darzek was hired to find out what was going on.