"Interrogator": "Okay, So how he swapped places", 
"Interrogee": "When the bomb blast happened The police officer who was escorting the man died and the fake Sam Murray takes out the handcuff keys from his pocket and he frees himself and then put the actual Sam Murray and those handcuffs. So then everyone thought that this boy was responsible for killing the police officer than they put him in the jail meaning that he was actual Sam Murray."