In fairness, I never saw the Flatliners remake from last year, so it might be better than I could have ever imagined. An unfairly maligned hidden gem. But the trailer sure as hell didn’t sell me, its critical and audience ratings range from poor to pitiful, and I never liked the original film all that much in the first place. Still, it’s a notable entry in the horror genre, and introduced an interesting premise to a lot of fans.
(I note in my CFJ entry on Simon’s Soul that that obscure novel did it before Flatliners, but also abandons the premise for even stranger things before the midpoint of the book. Meanwhile, the first literary work to tackle the idea of killing and medically resuscitating people deliberately is apparently Jack London’s “A Thousand Deaths”, released way back in 1899, although the person being killed and brought back in that short story is not a volunteer for the experiment).