- HD 1080
- Runtime: 110m.
- Status: Released
0
- Languages: es
- Country: Spain
- Director: Agustí Villaronga
- Stars: María Barranco, Terele Pávez, Ruth Gabriel, Ángel de Andrés López, Gustavo Salmerón
- keywords: experiment, radio, love, psychic, gay theme
- Production_studio: Impala, Sogepaq
- Slogan: Fear has a number.
- providers: Night Flight Plus, Midnight Pulp
- The 99.9: The Frequency of Terror is featured in the top rankings of 1997
- #33 in Top Mystery Movies of 1997
- #43 in Top Horror Movies of 1997
Lara, the host of a radio call-in show dealing in psychic phenomena, discovers that her estranged lover has been found dead in a small Spanish village.