Instinto Asesino (, English: "Killer Instinct") is a series produced by Endemol Argentina for the Discovery Channel. Each episode portrays a notorious Criminal case that occurred in a country in Latin America. So far, cases depicted occurred in Argentina, Brazil, Chile, Colombia, Mexico and Venezuela. The first season features six cases and the death toll caused by the six criminals combined surpasses one hundred victims, most of them women and children. A second season aired in Latin America, with eight episodes total.

First season

1. "El Monstruo de los Cañaduzales"

The opening episode discusses the case of Manuel Octavio Bermúdez, a Colombian pedophile and serial killer. His Nickname is "El Monstruo de los Cañaduzales" (The Monster of the Cane Fields). He confessed to the rape and murder of 32 children in remote areas of Colombia between 1999 and 2003.

2. "La Mataviejitas"

Juana Barraza is a Mexican thief and serial killer. Her Nickname is "La Mataviejitas" (The Old Lady Killer). Arrested for killing and stealing the possessions of several middle-aged women between the late 1990s and 2006, there are questions about the real number of her victims, estimated between 25 and more than 40.

3. "El Maniaco del Parque"

Francisco de Assis Pereira is a Brazilian rapist and serial killer, known as "O Maníaco do Parque" (The Maniac in the Park). He was arrested for the torture, rape and death of 11 women and for assaulting nine in a park in São Paulo, Brazil during the 1990s. Pereira found his victims by posing as a talent scout for a modeling agency.

4. "Masacre Escolar"

A student, Rafael "Junior" Solich, was responsible for the school shooting at the Islas Malvinas middle school which occurred in 2004 in the city of Carmen de Patagones, Argentina, killing four students and wounding another five. On location filming at the school where the tragedy occurred was blocked by Argentine officials.

5. "El Padrino"

Adolfo Constanzo was an American serial killer, drug dealer and cult leader, known as "El Padrino de Matamoros" (The Godfather of Matamoros). His cult is responsible for a series of human sacrifices in Matamoros, Mexico during the 1980s. He ordered a follower to kill him in the arms of his male lover.

6. "El Vampiro de Niteroi"

Marcelo Costa de Andrade, a Brazilian pedophile and serial killer, confessed the rape and death of 14 children in the Brazilian cities of Rio de Janeiro and Niterói in 1991. His habit to drink the blood of his victims earned him the nickname "O Vampiro de Niterói" (The Vampire of Niterói).

Second season

1. "Bruja Asesina"

2. "La Massacre de Pozzeto"

3. "El Monstruo de Rio Claro"

4. "El Maniaco de Trianon"

5. "La Hiena de Querétaro"

6. "El Sadico"

7. "La Casa del Horror"

8. "Viuda Negra"

Third season

1. "Furia en Caracas"

2. "Secretos de Familia"

3. "Entre el Amor y el Espanto"

4. "El Atajo de la Muerte"

5. "Mil Caras"

6. "Codicia Extrema"

7. "La Quintrala"

8. "Justicia para Isabella"

9. "Los Niños ya están Durmiendo"

10. "Águila o Sello"