This is my least favorite installment of the ‘Hart to Hart’ movies so far. I didn’t notice the characteristic appeal of Robert Wagner and Stefanie Powers as strongly in *‘Hart to Hart: Two Harts in 3/4 Time’*, and while they remain the best aspects of these films, I simply didn't find them very entertaining this time around. The story doesn’t help matters; it’s quite dull, even with Joan Collins appearing. The fin…