Another Repeat Bundle - Cthulhu Confidential
https://bundleofholding.com/presents/2022CthulhuCon

One-2-One is a fast-paced head-to-head version of the popular GUMSHOE system by Robin D. Laws. GUMSHOE games are designed for scenarios of detection and crime-solving. In a typical RPG, bad skill rolls may mean you miss a vital clue and send the entire investigation off track. In the GUMSHOE System, the player will find the clues; the important thing is figuring out what they mean. Play a mystery scenario in a GUMSHOE game and you'll never go back.
This revival once again presents much of the One-2-One line for a bargain price. We provide each title complete in .PDF. Like all Bundle of Holding titles, these ebooks have NO DRM (Digital Restrictions Management), and our customers are entitled to move them freely among all their devices.
Ten percent of each purchase (after gateway fees) goes to this Cthulhu Confidential revival's pandemic-related charity, Cochrane Reports. Cochrane maintains a Covid-19 resource page for policy developers that describes up-to-date clinical best practices in multiple languages.
The total retail value of the titles in this revived Cthulhu Confidential Bundle is US$99. Customers who pay just US$12.95 get all four titles in this revival's Starter Collection (retail value $46) as DRM-free ebooks, including the complete standalone 328-page Cthulhu Confidential rulebook (retail price $25) and three investigations (retail $7 apiece): The Howling Fog, The House Up in the Hills, and One For the Money.
Those who pay more than the threshold (average) price, which is set at $24.95 to start, also get this revival's entire Bonus Collection with five more titles worth an additional $53, including the complete 282-page standalone rulebook for Solo Ops (retail $25), Gareth Ryder-Hanrahan's standalone adaptation of Kenneth Hite's vampire-espionage GUMSHOE game Night's Black Agents; the first Solo Ops investigation, The Best of Intentions (retail $7); and three more Cthulhu Confidential investigations (retail $7 apiece): High Voltage Kill, Ex Astoria, and The Shadow Over Washington.
Last time I said: "I'm not a huge fan of one on one gaming, and I've uses Call of Cthulhu so much for this genre that I find it difficult to adapt to any other rules set. But the Gumshoe rules have a huge following and seem to be well adapted for the genre and for one to one play, so it's certainly a viable choice. As usual you're getting a lot for your money. Recommended!"
Really don't see any reason to change that.