It's illegal to break into things.
Calvin left important documents for work in his friends house, and his friend is out of town.
Calvin needs to get his documents.
Calvin requests another copy of the documents from his coworkers.
Calvin enters his friend's house by picking the lock and grabs his documents.
Calvin gets complimented by his boss who is impressed by his honesty.
Calvin is arrested by the police after his friend's security system catches him breaking in.