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Title: Citadels Under Attack
Series: #5 of Flash Gordon
Author: Ron Goulart, Alex Raymond
Narrator: Johnny Heller
Format: Unabridged Audiobook
Length: 3 hours 47 minutes
Release date: June 9, 2020
Genres: Science Fiction
Publisher's Summary:
Declared outlaws on Earth, Colonel Flash Gordon and his companions, Dale Arden and Hans Zarkov must flee to a distant planet. In deep space, far from a home they may never be able to return to, the trio become involved in a centuries-old battle which threatens the existence of the entire universe.