This website doesn't contain every murderer in the world on it. If you haven't found what you're looking for, why not try one of these places instead:

MurderUK - a site similar to this one, dealing with murders in the UK only. Covers many murders not yet covered here.

Crime Library - A comprehensive encylopedic website covering cases in geat detail. A very useful source.

Alternatively, you could email me your queries.