Context: Loki did n't like the idea of me going to therapy , and he 'd always ask did you find out who the killer was , and when I 'd shake my head he always seem to have a calm almost relieved face . It makes me wonder . Sighing I leaned back in my chair " it was pretty well today , and beacuse I know you 'll ask no I do n't know who the killer is .

Question: Why does Loki seem relieved when I answer no , I do n't remember who the killer is ?
Options:
0. Loki does n't like to hear about negative things .
1. He is going to star in a drama and is learning to be dramatic .
2. Loki is pretending to be relieved because he is trying to pretend I 'm crazy .
3. Loki knows who the killer is and it would be problematic for him if I knew .
Answer: 3