Dorothy L. Sayers said this quote
“ Salcombe Hardy groaned: How long, O Lord, how long shall we have to listen to all this tripe about commercial arsenic? Murderers learn it now at their mother's knee. ”
“ Salcombe Hardy groaned: How long, O Lord, how long shall we have to listen to all this tripe about commercial arsenic? Murderers learn it now at their mother's knee. ”