Hilo de Sangre Azul tells the story of a journalist who, upon reaching the building where she resides, finds her ex-boyfriend, a womanizer and vividor, dead in one of the apartments, in what appears to be a suicide, however, the journalist is sure of That was not the case and in the search for the truth, he will come across a series of secrets that include infidelity, corruption, lies, homosexuality and, of course, a murderer who is not willing to be discovered.