The Sionis family is from the Batman comics. Most notably Roman Sionis, a villain known as the Black Mask who made his comic debut in August 1985 in Batman #386. He is known for a feud against Bruce Wayne who bought out his company when he bankrupted it and for wearing a black wooden mask made from his father's coffin.
In this episode, Bruce Wayne's childhood best friend, Tommy Elliot, is featured. In the comic book Tommy Elliot is seen to have become one of batman's most mysterious and clever villain, "hush".
Richard Sionis espoused a "warrior's ethos" philosophy. In the 1980's, books like "The Five Rings" by legendary swordsman Musashi Miyamoto and Sun Tzu "The Art of War", was required reading in Financial Houses of Wall Street, especially if one wanted to get ahead of one's rivals inside the firm, and the company's competitors from without.
Oswald is talking to his mother about the "restaurant" business and his hand injury when she suggests going to the boss about it. He replies "This person isn't afraid of the boss. Not like they should be." This is the proper usage of "they" as an indefinite third person singular antecedent. Webster's Dictionary goes on to say that "they" used as an indefinite subject is sometimes objected to on the grounds that it does not have an antecedent. Not every pronoun requires an antecedent, however. The indefinite "they" is used in all varieties of context and is standard.
One way of charging someone with a crime, is through a confession, especially one written and signed by the suspects own hand. But if a suspect's attorney makes a claim that his statement will be "considered having been made under duress", and the written statement was not signed, and the attorney advises his client not to speak any further on the matter, then there is no material evidence supporting the charge and the suspect is released from custody.