“Ravers” (*1/2 out of four) was a tiresome sci/fi thriller not worth raving much about involving a journalist (Georgia Hirst) who attends an all-night rave party in which a contaminated energy drink turns most of the partygoers into zombies and killers. One-note movie rips off (of all movies) “From Dusk Till Dawn” and soon runs on empty although director Bernhard Pucher and cinematographer Luke Bryant try to infuse it with as much style as possible. One-time 90’s siren Natasha Henstridge shows up and is wasted in a minor supporting role.