Why Is Sergei Killed?
Short Answer
Sergei is killed because Amaya catches him stealing Devs code and chooses murder and a staged suicide over exposure.
Connected Story Threads
Lily refuses to accept Sergei's suicide story, making his death the emotional engine of the series.
Sergei copies Devs code in the bathroom because his handler wants proof of Amaya's secret technology.
The handler pressures Sergei to steal from Devs, placing him between foreign intelligence and corporate punishment.
Kenton kills Sergei after the code theft and Amaya presents the body as a public self-immolation.
Kenton is the person who turns Amaya secrecy into bodily harm.
Sergei murder is Kenton's first major act in the cover-up.
Direct Answer
Sergei is killed because Amaya catches him stealing Devs code and chooses murder and a staged suicide over exposure.
Evidence From The Series
Kenton murders Sergei after the theft is discovered, burns the body, and Amaya presents the death as self-immolation, which Lily doubts.
Why It Matters
The killing shows that Devs is protected by force before viewers understand the machine fully.
Related Characters, Places, and Concepts
More Questions About Sergei Pavlov
Yes. Sergei copies Devs code for Russian intelligence, but that does not justify Amaya murdering him and staging his death.
Devs is about Lily Chan uncovering Amaya's cover-up of Sergei's death and discovering a machine that turns grief, prediction, and free will into a moral crisis.
Lily Chan is an Amaya encryption engineer whose investigation into Sergei's death leads her into Devs and the final broken prediction.
Jamie is Lily ex-boyfriend and a cybersecurity worker who helps her investigate Amaya, then is killed by Kenton.
Pete is the man near Lily's apartment who appears homeless but is revealed as part of the Russian intelligence presence around Amaya.
Kenton is killed by Pete during the confrontation in Lily's apartment after trying to eliminate the remaining threat to Amaya's cover-up.