An administrative police officer, Franco Montero, receives as an inheritance the care of a half-brother that he did not know. Lorenzo Montero, a child prodigy with an IQ of 200 who changes his way of life and his work. The eleven-year-old's intelligence puts Franco and his assistant Gustavo Mansilla in charge of the homicide division. By deducing and exploring the three, they solve the most striking cases.

• Rodrigo de la Serna
• Rodrigo Noya
• María Marull
• Oscar Guzmán
• Ignacio Huang
• Carlos Moreno