Operation Tiburon (1967)

aka: Operación Tiburón

A popular singer is suspected of being involved with a notorious drug dealer, the Shark. Meanwhile, a friend of the singer is recruited by Interpol to find the criminal’s real identity. Stars Raquel Bardisa, Lucecita Benítez and Ruth Cains. (In Spanish language).

The picture quality is rather soft, but the the best available anywhere.