Arsenic sticks around and today it's easily found after death if somebody thinks of looking for it, because the problem with arsenic, it isn't looked for in the common tests for drugs.
“So what are we given? We're also given, my generation, the disillusionment of our parents.”
“For at least another hundred years we must pretend to ourselves and to every one that fair is foul and foul is fair; for foul is useful and fair is not. Avarice and usury and precaution must be our gods for a little longer still.”