When Melanie Cole (Lucy Hale) is in the torture room, she begins recording herself on her cell phone, but afterwards presses the record button again.
When they are taken to the glowing rock, Melanie's fantasy is shown as torturing Sloane when it should have shown her fantasy for revenge.
When Melanie reveals she wants revenge for Nick who died in the fire, she fails to reveal how she magically knew how they were all there that night, and all "could" have done something but didn't.
When Damon saves Melanie and Sloan from Dr. Torture and they walk to the caves, she says "we walked the whole night" later on when Damon dies they take few minutes to walk back to the torture room, then reunite with other guests and few minutes later they are back to the caves.
In several moments during the movie Dr. Torture seeks Melanie and tries to hurt her, but at the final scene when she tells everybody her plan, all terrorists and zombies are next to her like somehow they obey her.
At the end of the movie when Sloan wishes that Melanie stays forever with Nick and she is dragged into the water suddenly the zombies disappear as if she was dead. But seconds later she re-emerge from the water and throw out the grenade showing she was not dead then.
The Special Forces soldiers encountered are wearing their SF Unit patch upside down.