Sherlock tells Joan "the thing that's different about me, empirically speaking, is you." I love them so much. 🥹

Working through season 7 for the first time.

In S7E9, they introduce the Ghost of Brooklyn, a serial killer whose DNA was found many seemingly random places. I didn't realize until the reveal that it was directly inspired by the Phantom of Heilbronn, which I coincidentally read about yesterday!

https://en.wikipedia.org/wiki/Phantom_of_Heilbronn

Both Elementary's Ghost of Brooklyn and the real-life Phantom of Heilbronn were actually employees at the factory that made the cotton swabs used to collect DNA samples, hence why their DNA was at many different crime scenes.