Mind you this particular Undertaker does demonstrate something No.2 once said "But they'll get me eventually. They'll find me wherever I am." And so it was with the Prisoner-No.6 when he went looking for Professor Seltzman. The Undertaker found No.6 in Kandersfled in Austria. Mind you he had it a little easy, seeing as Potter was following the Prisoner, and all the Undertaker did was to follow Potter!