On October 26 NBC’s show “Grimm” will take on the Latin American tale of “La Llorona” for its Halloween episode. The episode is a joint project among NBC Universal, Telemundoand and mun2.

It will be aired Friday, 10/26 on NBC at 9 p.m. (ET), mun2 at 1 a.m. (ET) and Monday, 10/29 on Telemundo in Spanish at 11:35 p.m. (ET).

The episode guest stars Telemundo’s Kate del Castillo as Valentina Espinosa a mysterious detective from New Mexico working with “Grimm” detectives Nick Burkhardt and Hank Griffin to catch an other worldly predator believed to be “La Llorona” after a string of Portland children have been abducted.

For those of you who are not familiar with the age old tale, Latin American folklore tells a story of a distraught mother who drowned her children and then herself. The ghost of the mother emerges from water in order to haunt and terrorize the living as “La Llorona”(“The Weeping Woman”).