The Fatal Hour is a 1940 American thriller crime drama film directed by William Nigh. It starred Boris Karloff (as James Lee Wong), Grant Withers, and Marjorie Reynolds.

The film is also known as Mr. Wong at Headquarters in the United Kingdom. It was followed by the sequel Doomed to Die.

Plot
When a police officer is murdered, Captain Street looks to Mr. Wong to catch the killer. Prime Suspect: Frank Belden Jr., whose father is a businessman well known for both his success and dishonesty. Mr. Wong faces increasing danger and is nearly executed himself as the investigation develops in treachery and complexity. As Mr. Wong follows the trail of dead bodies, he uncovers a jewel smuggling ring on the San Francisco waterfront and a case much larger than the death of a police officer.

Cast
Boris Karloff as James Lee Wong
Grant Withers as Capt. Bill Street
Marjorie Reynolds as Roberta ‘Bobbie’ Logan
Charles Trowbridge as John T. Forbes
Frank Puglia as Harry ‘Hardway’ Lockett
Craig Reynolds as Frank Belden, Jr.
Lita Chevret as Tanya Serova
Harry Strang as Det. Ballard
Hooper Atchley as Frank Belden Sr.
Jason Robards, Sr. as Griswold (as Jason Robards)
Richard Loo as Jeweler
Jack Kennedy as Mike, Police Sergeant