Comic Title: Rip Hunter... Time Master #14
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: May/Jun 1963
On Sale Date: March 14, 1963 Copyright Date March 14, 1963
Source: Library of Congress, Periodicals 1963

Frequency: Bi-monthly
Cover Price: $0.12
Page Count: 32
Editor: George Kashdan

Title: "The Captive Time-Travelers"
Pages: 25

Feature(s):
Rip Hunter (of Earth-1)

Writer: Jack Miller
Artist: John William Ely

Reprinted In:
Showcase Presents:Rip Hunter, Time Master Vol. 1 TPB (2012)

Feature Character(s)

• Rip Hunter (last appearance in Rip Hunter... Time Master #13; next appearance in Rip Hunter... Time Master #15)

Supporting Character(s)

• Jeff Smith (last appearance in Rip Hunter... Time Master #13; next appearance in Rip Hunter... Time Master #15)
• Bonnie Baxter (last appearance in Rip Hunter... Time Master #13; next appearance in Rip Hunter... Time Master #15)
• Corky Baxter (last appearance in Rip Hunter... Time Master #13; next appearance in Rip Hunter... Time Master #15)

Villain(s)

• Jervis, a deputy mayor, and their hirelings (no further appearances)
• Cesare Borgia (Duke of Romagna; no further appearances)
• Cesare's men (no further appearances)

Other Character(s)

• Professor Firenzo (an Italian scientist; no further appearances)
• Leonardo Da Vinci, a provincial mayor from the year 2550, and the Venusians (no further appearances)

Comments:
Chap. 2: "The Future Fugitive"
Chap. 3: "Prisoners of Time"

Synopsis:
Rip, Bonnie, and Corky take a Time Sphere to ancient Italy and meet Leonardo Da Vinci. Da Vinci has sealed a powerful explosive into an unbreakable container set to open in the year 2550. Jervis, a professor’s assistant that had joined Rip on the mission, betrays the team and steals the Time Sphere. Jeff arrives in another Sphere and rescues his teammates then they head for the year 2550 to stop Jervis.

Rip is ambushed and captured in the future, but he befriends a provincial mayor who has been imprisoned by Jervis and his future partners. The team breaks Rip out of prison and successfully stops Jervis. The container opens and the explosive is released on schedule. The mayor promises to disarm it while Rip and the team return home.

The team is intercepted however by a Venusian spaceship. They reveal that they created the bomb and sent it to Earth to stop a runaway moon from colliding with Earth. Rip returns to meet the mayor again. They rocket the bomb to its intended destination, preventing the destruction of the Earth.