The Vanishing Dagger
Advertisement announcing the serial with stills from two other Eddie Polo films
Directed by	Edward A. Kull J. P. McGowan Eddie Polo
Written by	Jacques Jaccard Hope Loring Milton Moore George W. Pyper
Starring	Eddie Polo Thelma Percy
Cinematography	Edward A. Kull
Distributed by	Universal Film Manufacturing Co.
Release date	June 7, 1920 (1920-06-07)
Running time	18 episodes
Country	United States
Language	Silent (English intertitles)

The Vanishing Dagger is a 1920 American adventure film serial directed by Edward A. Kull, J. P. McGowan, and Eddie Polo. It is presumed to be a lost film.^[1] Portions of this serial were filmed in England.^[2] The film had the working title The Thirteenth Hour.

• Eddie Polo as John Edward Grant
• Thelma Percy as Elizabeth Latimer
• C. Norman Hammond as Sir George Latimer
• Laura Oakley as Lady Mary Latimer
• Ray Ripley as Prince Narr
• Karl Silvera as Prince Zan
• Ruth Royce as Sonia, Narr's Favorite
• Thomas G. Lingham as King Claypool
• Peggy O'Day as Nell (credited as Peggy O'Dare)
• Texas Watts as Len, Grant's Man
• Arthur Jarvis as Sir Richard Upton
• Leach Cross
• Leslie T. Peacocke
• J. P. McGowan

This article needs a plot summary. Please add one in your own words. (March 2023) (Learn how and when to remove this message)

1. The Scarlet Confession
2. The Night of Terror
3. In Death's Clutches
4. On the Trail of the Dagger
5. The End of the Rustlers
6. A Terrible Calamity
7. Plunged to His Doom
8. In Unmerciful Hands
9. The Lights of Liverpool (a.k.a. Ferocious Foes)
10. When London Sleeps
11. A Race to Scotland
12. An Evil Plot
13. Spears of Death
14. Walls of Doom
15. The Great Pendulum
16. Beneath the Sea
17. Beasts of the Jungle
18. The Vanishing Dagger (a.k.a. Silver Linings)

• List of film serials
• List of film serials by studio
• List of lost films

Wikimedia Commons has media related to The Vanishing Dagger.

• The Vanishing Dagger at IMDb