Busy working away in his lab, Donnie didn't register the sound of his lab door sliding open as he tinkered on his latest project. With his goggles over his face and his tongue sticking out slightly from his lips, he was completely in his element. So, when he decided to take a break and get something to drink, almost had a heart attack

Donnie opened his mouth to scold nikki mckay for scaring him but the expression on nikki face stopped him from doing so. Something had happened

Donnie: Nikki?