A new trailer for “The Lazarus Effect” has arrived, and it may cause you to triple-check under your bed for monsters and demons tonight.

Just sayin', this ish is SCARY.

The movie -- produced by the same guys who terrified you with “The Purge” and “Insiduous” -- stars Olivia Wilde as we've never seen her before, sporting terrifying black contacts and wreaking demonic havoc. Co-starring are Mark Duplass (“The League”), Evan Peters (“X-Men: Days of Future Past”), and Donald Glover, a.k.a. Childish Gambino (“Community”).

The story centers around a group of med students led by Frank (Duplass) and his fiancée, Zoe (Wilde), who figure out a way to bring the dead back to life. But when Zoe is killed during a freak lab accident, Frank decides to make her his first human test subject...and things get real freaky real fast.

“The Lazarus Effect” opens in theaters on February 27.