RED RINGS OF FEAR (ENIGMA ROSSO), 1978, 85 min       Director Alberto Negrin wraps up the SOLANGE trilogy in this giallo where more sexually precocious schoolgirls bite the dust       Fabio Testi is the police inspector on the murderer’s trail, and Christine Kaufmann is his girlfriend       Chock-full of red herrings, perverse twists, sleazy situations, outrageous dialogue and an out-of-left-field climax, punctuated by Riz Ortolani’s groovy score