Candle in the wind

ReelzChannel takes a break from obsessing over John F. Kennedy's assassination to focus on the death of another beloved public figure in "Princess Diana: Behind Closed Doors" (8 p.m. Saturday) and "Princess Diana's Death: Mystery Solved" (8 p.m. Sunday). The fact that her tragic passing was even a "mystery" will come as a surprise to most viewers.

ReelzChannel

Getting off the horse

The mainstream media's recent discovery that heroin use is running rampant in suburbia has resulted in a flurry of special reports, including "Intervention In-Depth: Generation Heroin," narrated by Matt Lauer. This documentary zooms in on wealthy outskirts of St. Louis, where a former football star and an honor roll student are among the recovering addicts.

7 p.m. Sunday, A&E

Jumping to conclusions

"D.B. Cooper: Case Closed?" promises to provide new evidence that shows how the criminal pulled off a midair theft in 1971 and then disappeared — literally — into thin air. Chances that he lost the money and started pumping gas alongside Elvis Presley in a Mississippi service station remain slim.

8 p.m. Sunday, History

Neal Justin