Whereas I take a scenario or a bunch of scenarios that other people have written, look at my group -- players and PCs -- and then pull the scenarios apart and stick them back together. It's customizing, not writing, but very useful.
One thing Gumshoe taught me:
1. Diagram scenario -- what are the core clues? Where does each clue lead?
2. What skills are required to find the clues?
3. What skills do the PCs have?
4. Do the skills the PCs have = the skills required to find the core clues? If so, you're done. I mean, okay, I will tweak things and prep, but the point is, the scenario's structure is solid. If not:
5. What needs tweaking? Hopefully, just one or two things. If more than one, okay, you've likely got a flawed scenario, and best to know that now. Alternatively, the scenario might be fine, but you just know the PC with Skill X won't be where the clue requiring Skill X is.
6. Now, tweak as needed. No one has Cop Talk? Will Law work? Can someone be Flattered or Negotiated with? Does the clue have to be in the police station? The clue, after all, is information, not a person or item. Can Preparation work? E.g., "I knew we needed to sort through old idols, so I went to the Metropolitan Museum and crammed -- can I do that as a Preparation roll?"
7. Once you've nailed all that down, you're probably done as far as structure goes. Next, there's meeting the enemy -- er, the players. At that point, you're doing a combination of very group-specific prepwork and furious improvisation.
Edited by Lisa, 25 September 2017 - 02:06 AM.