* The moment in the pilot where everyone boards the ''Magus''. Never mind the moss-covered rusty ship, with its serious CreepyBasement vibe, but the protagonists hear something inside the panic room, knocking on the door. They notice that the door has been ''[[SealedEvilInACan welded shut from the outside]]'', and while they all assume the knocking is from lost explorer Emmet Cole, there's no ''voice'' to go along with it...
* The dolls from the second episode.
* A.J.'s experience under the tree. Made all the more frightening by the fact that there's really nothing supernatural about it.
* What happens to Manny. Dear God, poor Manny.