Newt wouldn't call it a shriek, not even a scream or a yelp. It's more of a deep, guttural call of distress that he lets out when he hears the growl of certain death in his ear followed by goddamn Derek Hale's voice. And he only jumps like a couple inches off the ground, which is nothing, it's not even worth mentioning, really, plus he's only clutching at his chest because he's making sure his tie's on straight.

"Dude," he says and okay, maybe his breathing hasn't quite slowed down yet, and he realizes Derek can probably hear how fast his heart rate is, but that doesn't mean he's going to admit to very nearly pissing his pants just now. "What even is wrong with you? Not cool!"