He was scared and had no way of getting out of this situation. He was so nervous that he actually wet himself. Alicia started the execution by washing Robert clean. There had to be no trace of saliva anywhere in the room. This meant that she also had to wash the glasses used diring the meal. There couldn't be anything left that could point to Alicia.
Then Alicia took out a large sharp knife and said: "I do this for the numerous women and girls you have destroyed in your miserable life. And to add to that, all the lives you have destroyed by selling them drugs."