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The Catacomb and Dogma Affair
April and Mark are in Venice to capture Horsch, a top-ranking crook. April manages to grab him and the three set off for the Yugoslavian border. When border guards board the train on which they are passengers, Horsch escapes. April gives chase, following him to a villa where she is captured and drugged. Meantime, Mark is trying to trace April and they eventually uncover a plot to loot the Vatican.
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Other episodes for this season
![The Dog-Gone Affair](https://image.tmdb.org/t/p/w300/8AFcXe2Ulvwgi5oSyEq5EvuVWjU.jpg)
![The Prisoner of Zalamar Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Mother Muffin Affair](https://image.tmdb.org/t/p/w300/eTHxRGFlshzHM5imykWwU0egxdT.jpg)
![The Mata Hari Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Montori Device Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Horns-of-the-Dilemma Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Danish Blue Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Garden of Evil Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Atlantis Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Paradise Lost Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Lethal Eagle Affair](https://image.tmdb.org/t/p/w300/kZlYLxY5D90jVaMMZhYhVDwqfzc.jpg)
![The Romany Lie Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Little John Doe Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Jewels of Topango Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Faustus Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The U.F.O. Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Moulin Ruse Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Catacomb and Dogma Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Drublegratz Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Fountain of Youth Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Carpathian Killer Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Furnace Flats Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Low Blue C Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Petit Prix Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Phi Beta Killer Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Double-O-Nothing Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The U.N.C.L.E. Samurai Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The High and the Deadly Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)
![The Kooky Spook Affair](https://image.tmdb.org/t/p/w300/dqCUxJb1tHpLiiPXUVyjXHxUC9Y.jpg)