“The Organization” (1971)
In “The Organization”, the final film in the Virgil Tibbs trilogy, there is a vivid demonstration of the law of diminishing returns. The film features a plot that is not only
needlessly illogical, but commits the unpardonable sin of making the featured homicide detective fairly irrelevant to the main action.
A furniture manufacturing company is subjected to a robbery of such unnecessary overproduction (apparently designed to eliminate the possibility of escaping notice), so much so that it could have only been conceived by a scenarist overly stimulated by viewing any one of a hundred better caper films. The protagonists are a merry band of social activists, each equipped with a sad story and the kind of weighty chip on their respective shoulders which will guarantee that they will stupidly act in a recklessly emboldened fashion which will almost guarantee their demise.
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CHANDLER SWAIN REVIEWS 
One to miss, definitely. (A shame I didn’t take my own advice at the time)
Best wishes, Pete.
Yes, this series followed the “Dirty Harry” arc – each film got worse, but some feel that Harry’s 4th entry, “Sudden Impact” was a return to form before the tepid 5th installment…hard to imagine this came from a Best Picture winner!