The Thirteen - Sourcebook for Cthulhu by Gaslight

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The Thirteen is a supporting booklet for Hudson & Brand¸ Inquiry Agents of the Obscure for 7th edition Call of Cthulhu¸ and is an official Cthulhu by Gaslight product. This chapbook introduces an organisation of immortals¸ for the benefit of Keepers who wish to add something a little unusual to their games.

While there are no chapters¸ the 15 different sections of the book can be grouped together¸ roughly¸ as follows:

Section 1: The Society of the Thirteen. These sections introduce a new organisation of Mythos-aware NPCs¸ set in foggy Victorian London. The book starts off by covering their history¸ complete with a timeline dating back to the late Stone Age¸ from when (and how) they first gained immortality¸ up to the Victorian era.

Sections 2-5: Summary of the Society of Thirteen: The Society of Thirteen are¸ basically¸ human¸ and can serve easily in the role of enemy¸ ally¸ or merely other interesting NPCs for your investigators. These sections details some of the role-playing challenges a Keeper should expect when playing ancient humans¸ and a couple of driving motivations for the members of this group. Also covered is how members of the society keep the Sanity-rending effects of the Mythos at bay¸ and how they cope with all they've seen over the millenia.

Section 6: Playing the Society as an Organisation: This part covers the organisations group motivations and goals¸ what their limitations are¸ why they stay together¸ etc. It also delves into how they typically interact with outsiders (like those nosey Investigators). Lastly¸ it covers the resources that the Society of Thirteen has¸ including The Whiteacre Estate¸ some 10 miles to the west of London (easily reached from 33 Golden Square)¸ as well as the source of their power/"immortality."

Sections 7-14: The Society Members: These portions of the chapbook covers the surviving members of the group (and provides a list of the deceased members and what role they had served while still living). Each NPC is provided with a detailed history¸ their role in both the Society as well as Victorian-society¸ a stat block¸ encounters with famous¸ past figures they may've had¸ and then tips on role-playing each member.

Sections 15-16: Dealing with External Threats: The final two sections cover how the organisation will react to the deaths of any members as well as how they may react¸ long-term with any investigators that have been useful to them.

Games with themes of terror¸ tradition horror¸ drama¸ light sexual content¸ or violence