I would travel abroad briefly until I found a particularly poor group of people who, by virtue of needing to extend their wage packets, would be up for anything.
Having greased their grubby little palms with enough Pounds Sterling, Dollars or Euros for them to undertake any form of nefarious activities, I would :
A. Make sure they had the intelligence and cunning to perpetrate any form of crime - the nastier the better.
B. Make sure that if they were caught they wouldn't have enough information on my good self to point any fingers.
C. Give them the name, address and personal information on my ex-chum,
D. Casually mention to the above mentioned poor criminal types that the world would be a much nice place if my ex-chum (see C above) were to die in a (preferably) nasty manner.
E. Sit back and wait for any bad news or perhaps read the obituary columns of the local press.