please figure out WHAT THE AUTHOR DID...

A SIN OF OMISSION

around midnight, a sly looking man slips into a luxury city building. a woman occupant, watching his actions from a fourth-floor window, grows suspicious and dials 911 for a patrol car. This lady complains, "A man in a brown suit, with shaggy hair, a slight build, and a criminal air is prowling through my lobby."
Fairly soon two young cops, Smith and Jarvis, pull up. Looking for an unknown vargant, Smith spots Jim Oats walking out a front door. Oats, a minor burglar, is bold as brass , arrogant, and calm. Smith grabs him by his collar.
"O.K., Oats," snarls Smith, "what brings you to this location?"
Fixing his captor with a chilly look and frosty indignation, Oats quips, "I can go on a short stroll. Lift your filthy hands off of my shirt. I'm not guilty of anything."
Smith drops his hands limply. This haughty air is too much for him to swallow. Angrily Smith says, "What a story. I'm nobody's fool, you punk. I just wish I could put you back in jail, but I can't obtain any proof againstg you. You know all about why I'm at this building- a station log full of burglar, arson, abd muggings."
"Now, now," Oats laughs, "think of my rights. How can you talk this way?" Smith's probing hands start to frisk Oats for guns, narcotics, anything unlawful or contraband. Nothing shows up- only a small bound book. "What's this?" Smith asks.
Oats, tidying up his clothing, pluckishly says, "That's my political study of voting habits in this district. Why don't you look at my lists? I work for important politicians now- guys with lots of clout." An ominous implication lurks in this last thrust.
"Don't talk down to us," Smith snaps. But studying Oat's book, Jarvis finds nothing unusual. Smith finally hands him back his lists. Our cops can't hold him. Jarvis admits Oats can go. Just as a formality, Jarvis asks him, "Did you commit any criminal act in this building? Anything at all of which a courtroom jury could fin you guilty?"
"No," Oats says flatly. "No way," and jauntily skips off. Halthing six blocks away, Oats digs a tiny picklock from his socks and a diamond ring from his shaggy hair.

supposedly the title alone is supposed t o be a huge hint.. thanks for helping

Jim was walking out a front door when the cop first saw him, Not his house?

Based on the given text, the author of the passage depicts a sin of omission. This is indicated by the fact that the author does not explicitly state what Jim Oats was doing inside the luxury city building. The passage suggests that Jim Oats may have committed a criminal act by stealing a diamond ring, but the author intentionally leaves this information out. This omission adds suspense and intrigue to the story, as the reader is left to infer Jim Oats' actions based on the context and details provided. The title, "A Sin of Omission," also serves as a clue that the author purposely omitted crucial information from the narrative.