You know how a typical horror movie goes... introduce the characters, put them in a creepy setting, then horror happens. Usually someone figures it out by the end, but sometimes they don't. Sometimes there's a twist, but often it's just, "I figured it out!" This was that movie. Luckily, I like that movie.
Malevolent tells the story of a group of 'ghost hunters' that are really just scammers. But then spooky stuff happens and the one girl starts thinking that maybe she CAN see ghosts! Then, they go to a super haunted house, and GHOSTS! Creepy stuff happens and I can't tell you the plot points cuz that would defeat the purpose.
This movie could have been a lot better. The acting was ok, but the writing was poor and the characters were pretty thin. Still, it was spooky when it needed to be spooky and some of the twists and reveals were pretty good. I didn't love it, but I was entertained. There was some pretty good intrigue in it. I suggest watching it. It's not too scary, but it was decent.