Rhetsim was a member of the Xanathar Thieves' Guild of Skullport. Rhetsim was an alchemist running an alchemist shop in Waterdeep; her role in the Guild was gave to the Slaver division of the Guild the potions they need in their abduction expedition. for this often Ahmaergo or Avaereene went to the Rhestim's shop. Rahtsim was a hideous, mean old crone with sparse white hair and numerous chemical scars on her face and hands; she usually made paid the strangers double normal price in order to minimize her walk-in business with the Guild but she was very competent and her potions were very good. The only people that treats her kindly was Master Randulaith.