1. The police suspected that it was an inside job and promptly arrested the dismissed worker, for no reason other than that she might have borne a grudge against her erstwhile employer. BNC
2. Watson wonders, and the reader, if bright enough, works out that if a dog does nor bark when an intruder comes to commit a crime, then the crime is an inside job. BNC
3. Obviously it was an inside job, because nobody else knew the presents were there. BNC