Follow-up to 1967's "Tony Rome" is saddled with a tired, tangled plot concerning a murdered blonde in Florida and the investigation led by ultra laid-back private detective Tony Rome, who lives on a houseboat and discovered the girl's body while scuba-diving. Frank Sinatra returns to the role almost sheepishly; he isn't sleepwalking, exactly, but his interest in the scenario is blasé at best. Tracing the girl's killers to Miami high society (after Rome's buddy, police lieutenant Richard Conte, accuses Tony of the murder!), Sinatra is matched with hot stuff Raquel Welch as an alcoholic party girl (she makes her first appearance emerging from a swimming pool, bikini-clad of course). But Sinatra and Welch share few sparks in their scenes together--he's much more attentive to Lainie Kazan as a go-go dancer, and has more rapport with Dan Blocker as a mad Russian fond of twisting heads around. Adaptation of Marvin H. Albert's novel "The Lady in Cement" by Albert and Jack Guss, this mystery yarn is an absolute mess, unnecessarily crowded with suspects, heavies, gay stereotypes, brassy broads, hoods and junkies. By the time Sinatra's Rome lays out who-did-what-to-whom, interest has waned. Hugo Montenegro's bouncy score manages to keep things jazzy just up to the final reel. **1/2 from ****