El rey de los espinos

From Amazon.com: "A famous comic book author is murdered in the violent Buenos Aires of 2019. His burial is attended by family, fans, the press, and infamous secret police, called OFAC. And also someone else...four strangely-dressed men: a medieval knight, a pirate from the Opium Wars, a Hell's Angels motorcyclist, and an explorer from the Wild West. Nobody seems to notice them but Milo, who works at the cemetery. Are these four men heroes from the dead man's comics, as improbable as it seems? Milo suspects that their appearance is linked to a mystery: that of the storyteller's daughters, whose whereabouts are unknown."