From the back cover:
Have you met Griswald Grimm? You'll just die!
That Master of Alchemy, Griswald Grimm is back, eith 60 new poisons and potions for the fiendishly discriminating player-character or Gamemaster! Delightful destruction, rude revenge, fearsome fogs, drastic disguises, and all manner of enviromentally safe forms of magical and non-magical chemical compounds await the adventurous, the curious and the bold.