Let sleeping dogs lie - and dead people remain dead.



That's the takeaway from the super creepy trailer for "The Lazarus Effect." Olivia Wilde and Mark Duplass play scientists who come up with a serum that can resurrect dead beings. They try it first on a dog, and it works -- but the dog seems very different after coming back.



Then, after an accident in the lab that kills Wilde, they use the serum on her to very grave effects. She comes back to life, but she's not the same woman she was before, as her horrified colleagues soon find out. The movie comes from the same production house as "The Purge" and "Insidious," and looks just as spine-tingling as those films.



"The Lazarus Effect" also stars Donald Glover and Evan Peters, and opens in theaters February 27.