Sherlock rec - thanks

 Katlinel recommended Rigging screws, 1 3/8, galvanised to me. Having read it, I agree, it's excellent!

A Sherlock (TV) story, it's a believable case fic, with dialogue that feels spot on and Sherlock's brain on over-drive.  

It also has a really well-written original character - an intelligent middle-aged woman with an interest in sailing.  I know nothing about sailing, but the detail felt correct - I'm pretty sure the writer knows how to sail, or has a close friend who does.

The story grabbed me right from the start with a teaser involving metal corrosion - real science too!

I'm happily moving onto another rec.