My players asked me how I ran my games and what made them work, so I wrote a book. Then they asked for specific examples and ideas, so I wrote another one.
This companion to My Guide to RPG Storytelling goes deeper into creating in-game crises, with lists of example scenarios and twists. The second half covers using voices, mannerisms, and archetypes to create NPCs, including some of the most memorable NPCs from my own games and what made them work.