Rude Mechanicals, Kage Baker
A novella in Baker's tales of The Company. Probably best read if you're already familiar with the series, but it does stand on its own. Company operative Lewis and Joseph are in 1930s Hollywood and mired in comedy of errors trying to get a script and a diamond and meeting all sorts of real life players from the era. Baker's usual good work but it really left me wanting more Company stories to read but luckily there's tons of those.