edginess

noun
1
the state of being nervous, especially because you are uncertain about what might happen
بی‌قراری, ناآرامی, نگرانی, دلشوره
2
the quality in a film, book, piece of music, etc. of being exciting in a way that can make somebody feel uncomfortable
هیجان انگیز بودن, تحریک‌کنندگی, هیجان‌آفرینی
The edginess of the early scenes gets softened a little too quickly.