***Dramatic, melancholic Eastwood detective flick set in New Orleans*** A divorced detective in New Orleans (Clint Eastwood) juggles raising two daughters, pursing a serial rapist/killer, cultivating a romantic relationship (Geneviève Bujold) and dealing with his own dark side, which he realizes is too close for comfort to the killer. “Tightrope” (1984) is another Eastwood detective flick, but it’s not as entertaining and compelling as his Dirty Harry films or “The Gauntlet” (1977). It’s darker, more dramatic and brooding, not to mention a tad sleazy. This may bring to mind the original...