Dudley of Yesterzine 
Which does remind me of a point @jamesoff and I sometimes wondered.
They call the Letbys and Shipmans the "Worst" serial killers. Surely they are in fact the best at it?
Inquisitor Sponge@yesterzine @jamesoff In fairness the best are the ones that haven't been detected.
@retrosponge @jamesoff Interesting, so the worst one is the one who has failed to get away with most murders.....
danofthewibble@yesterzine And no. Being best would be not getting caught.