She kept him 'in suspense' [=waiting anxiously] for two whole days before she agreed to marry him.
I don't know who won and 'the suspense is killing me'. [=I am very anxious to know who won]
The 'suspense' builds as the story progresses.
(..) is when you tell me if Ava passed or failed. Right. Right. Are you gonna keep me in suspense? No, no. Her, uh... Her Al is beyond doubt. Is it? She passed? Yes. (..)2014 Ex Machina