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U2 Danger at Dunwater (1e)

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The little fishing town of Saltmarsh is threatened! Why are lizard men gathering force nearby and why have they been buying large quantities of weapons? A party of bold adventurers must answer these questions or the people of Saltmarsh will never live in peace!

"Danger at Dunwater" is the second part in a series of three modules designed and developed in the United Kingdom for beginning adventurers with the AD&D rules. Its plot follows direct from that of the first part (U1: "The Sinister Secret of Saltmarsh"). This adventure can be played by 6-10 characters of levels 1-4. This module contains large-scale maps, full background information, and detailed encounter descriptions for the players and DM.

Product History

U2: "Danger at Dunwater" (1982), by Dave J. Browne with development by Don Turnbull, was the second adventure in the "U" series and the third product overall from TSR UK. It appeared in 1982.

Another Thinking Adventure. Like Browne's previous adventure, U1: "The Sinister Secret of Saltmarsh" (1981), this one is set up a thinking adventure of a sort pretty uncommon in the early days of D&D. Upon learning the true state of affairs in Dunwater, many parties will negotiate with the lizard men of the adventure rather than fighting them, which is a very different sort of challenge than the typical dungeon crawl, and a fairly unique one even today. Of course, many reviewers have also opined that the disappointing result of this investigative and diplomatic content is that players don't get to explore one of the best designed dungeons of D&D's early days (i.e., the lizard men lair).

The Kuo-Toa Konnection. In some ways, the U-series adventures are structured like the classic GDQ series (1978-1980), where players fight against one race of monsters, then are led on to the next. If so, then U2: "Danger at Dunwater" fills the same role as D2: "Shrine of the Kuo-Toa" (1978), where the main goal is not to fight the monsters (though clever players in D2 avoid the Kuo-Toa, while in U2, diplomacy is required).

About the Creators. Dave J. Browne wrote the first four adventures for TSR UK: U1-U3 and UK1. Don Turnbull is credited with development; he of course had previously written Fiend Folio and was now the head of TSR UK. Graeme Morris, who did cartography, editing, and production for the entire U series would go on to greater fame as the author of the majority of TSR UK's adventures.

About the Product Historian

This history of this product was researched and written by Shannon Appelcline, the author of Designers & Dragons - a history of the roleplaying industry told one company at a time. Please feel free to mail corrections, comments, and additions to

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Discussions (2)
Customer avatar
Dominic L November 25, 2021 7:36 pm UTC
Very nice POD copy. All good. Another one added to the collection. Thanks Drivethrurpg and Lightning Source.
Customer avatar
February 22, 2018 7:04 pm UTC
I ran a group of players through the whole U1-U3 series, adapting them for 5e. U2 and U3 are a lot alike. In both, players go on a recon mission. That made U3 really awkward. I recommend combining the concepts in U2 and U3 so both "enemy groups" are somehow related and confronted/defeated at the same time.
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File Last Updated:
March 31, 2019
This title was added to our catalog on January 22, 2013.