Kirill is jailed for a murder he hasn’t committed. Bill can prove that it wasn’t Kirill. But he deliberately hides the evidence. Why?
Bill is a detective. A couple of years ago, he investigated a murder, and he believes that Kirill committed it. But the court decided otherwise, and Kirill walked free.
Bill decided to hide all the evidence of the new crime so that Kirill could be punished for the murder.
(Pay attention to the difference between “believe” and “know” when answering the questions)
This is a common plot for literature and movies.
In Claude Chabrol’s Inspector Lavardin, an innocent man is accused, but Lavardin keeps silent although he knows that he’s innocent in this murder case, since the accused has committed other crimes that Lavardin can’t prove.
“The Judge and his Executioner” by Friedrich Durrenmatt has the same plot.