The novel “Head On” by John Scalzi was published for the first time in 2018. It’s the sequel of “Lock In”.
Hilketa is a sport that has become popular thanks to the fact that players are on the field through their threeps, robots remotely controlled through a neural implant. This makes it practically a monopoly of Hadens, people who got struck by a disease that made it impossible for them to use their organic body, because they’re the only ones who can use a threep with the skills needed for the game.
When Duane Chapman dies after his threep’s head was cut off during a Hilketa match, establishing what happened to him is crucial because there are many interests behind Hilketa, with a league trying to expand outside the USA. FBI agents Chris Shane and Leslie Vann investigate and immediately start discovering complications, starting with the apparent suicide of a league executive.