To twist the knife means to add to exacerbate or amplify a betrayal or wrong by further malicious actions, which is what is happening in this context.
Given the statement "Most of the time, his expression is dominated by more cerebral emotions: self-satisfaction, curiosity, amusement, a desire to deepen the wound.", is the statement "Most of the time, his expression is dominated by more cerebral emotions: self-satisfaction, curiosity, amusement, a desire to twist the knife." wrong?
- Yes
- No
- Unknown