The original Alien was a near-perfect horror movie. The sequel, Aliens, was a near-perfect action flick. Prometheus was, uh, let’s say cerebral, but the first trailer for the next installment, Alien: Covenant suggests the series is going back to its roots: straight-up sci-fi terror.

The trailer — which dropped at midnight on Christmas day like some sort of horrifying chest-bursting Santa — opens with a woman running down a dark spaceship hallway. She’s forced to essentially condemn a fellow crewmember to death because she’s trapped inside with an infected man. The chestburster inside the doomed man appears to be flipping the script and busting out through his back, which is deeply unsettling.

From there, the trailer shows off lots of dim, moody, and suspenseful scenes that show off the cast, including Katherine Waterston, Danny McBride, James Franco, Jussie Smollett, Billy Crudup, and Michael Fassbender, who once again is playing David the android. There’s also a shot of an iconic crashed Space Jockey ship. Those guys are nothing but trouble, huh?

Watch the entire trailer — including a shower sex scene that turns bloody — below.

Alien: Covenant is set for a May 19 release date.

Photos via 20th Century Fox