The version I still love was one the RSC did in 1984 (86 at the Barbican Theatre in London) with Sir Derek Jacobi and Sinead Cusack.

Dare I say it ... but Hero having to play dead might also just set off a PTSD situation in John (or Sherlock, or both( especially as there has to be a torchlight lament at her tomb. Some sad family member might think it funny and make a perfect copy of the cemetery where Sherlock's not-grave is and that would really put the cat amongst the pigeons.