The Bermuda Triangle(or Devil's Triangle) was a very hot topic in the 1970s, in films, television, and a number of best-selling books. It's a little surprising there weren't more TV films made on the subject, then, frankly.
BTBT is a mid-level mysteryhorror effort in which Fred MacMurray investigates the disappearances of aircraft, and boatsships in the area off of Florida's eastern coast. Donna Mills is on hand to offer her stunning beauty, as is the ill-fated Dana Plato whose first credit this was, I believe. She gives a performance with a nice touch of pathos as the young girl who has recently lost her mother to the Triangle.
Mills wasn't yet terribly well-known although she was popping up often on television by this point. Her performance is engaging, and it's always nice to see her, of course.
The film meanders along somewhat, which modern viewers will probably find somewhat tedious, but there is a nice twist at the conclusion for those patient enough to wait for it. Used to be shown on local indi stations, and cable fairly-often, but seems to have disappeared it self, more or less. Wonder if it's available on disc? For those of us who recall the usually excellent made-for-TV suspensehorrorsci-fi films of the 1970s, I imagine most would like to own it for the sake of completeness.
Review by jefffisher65-708-541158 from the Internet Movie Database.