Bodyguard is a 1948 American film noir directed by Richard Fleischer and written by Fred Niblo Jr.and Harry Essex.

In the info on Lieutenant Borden's cases, one item stands out, the death of an inspector at the Continental Meat Packing plant.

Narrowly avoiding arrest checking out the testimony of the optometrist at his office, Carter next tries to find information at the glasses manufacturer; it's after hours so he breaks in.

At the mansion, Carter confronts Mrs. Dysen, who reveals that Freddie thinks Fenton has been adding water to the meat to increase its price and pocketing the difference.

Brian Baxter of The Guardian identified Bodyguard as one of Fleischer's early RKO films that has stood the test of time.

[1] Michael Barrett of PopMatters rated it 6/10 and called it "a trim little B film that’s an unpolished gem of late-'40s noir".