To quote the author's note from the top of the story: Warning for flashbacks to a violent case involving mentions of murder and suicide (of minor, non-canon characters). Possible trigger warning for realistic depictions of depression.
This is the first time an author has requested me to record their story.* I was delighted to do it, it's a great story! I loved the Sherlock POV and all the altered state stuff.
*I hope it isn't the last!