How to Use "whodunit" with Example Sentences

1. Can you tell me whodunit ?

2. It is not the most promising script for a whodunit .

3. Asking people to guess whodunit ?

4. Courage is not peeking at the last pages of your whodunit book to find out who did it .

5. Courage is not peeking at the last pages of your whodunit book to find out who do it .