International card-players-killers club

(story based on local news)

In different cities of the world, murders sometimes occur in cinemas.
It would seem that these are not related events in any way. But if you
look closely at them, you can find one thing in common. The death of
a victim depends on the number of the chair on which it is located. For
example, a resident of Chelyabinsk was preparing to stage a massacre
in 2020, in one of the city's cinemas. 
In 2011, in Riga, a doctoral student of the Faculty of Law suddenly shot
and killed an employee of Citadele Bank for no reason in cinema. On
October 25, 2015, a cleaning lady from the Kemerovo cinema discovered
the corpse of a girl with no visible signs of a violent death. In the
city of Omsk in 2019, a man took his own life in a cinema. On March
11, 2020, the body of the school director was found in the Kiev cinema
"Florence".
Commentators associate these and many other events with the international
club card-players-killers. It is known that only a select few avid players
can become members of this organization. This group used to be known
as the suicide club. According to the old rules, a player who lost a game
of cards had to commit suicide. But as you can imagine, over time, the club
began to die out. Therefore, the rules have been changed. According to the
new rules, a player who loses a game must kill a man sitting in a certain
place in a cinema. He must come to all screenings of films in the cinema
until he pays the card-play debt. In Soviet times, viewers killed with an
ordinary long awl during the film. But over time, the rules were
supplemented and added to them not only the choice of the victim's
chair number, but also the type of murder. It is noteworthy that none of
the murderers caught in the cinema had any acquaintance with their
victims. Which indirectly confirms the story about this strange club.