ARSENIC

Pharmacopoeia item

• ___ and Old Lace

• ___ and Old Lace (Joseph Kesselring play)

• #33 on a table

• Abby and Martha's poison of choice, in a 1939 play

• As in formulas?

• As, chemically

• As, in the lab

• As, on a table

• Cause of Philip Boyes's death in a Dorothy Sayers novel

• Christie element

• Elderberry wine additive, in a classic film

• Elderberry wine additive, in a Kesselring play

• Element #33

• Element in insecticides

• Element in many Agatha Christie books

• Element of many murder mysteries?

• Ingredient of the Brewster sisters' elderberry wine

• Insecticide ingredient

• Insecticide poison

• It's detected by the Marsh test, in forensics

• Killer in a Kesselring play

• Killer in some murder mysteries

• Murder mystery element?

• Napoleon's rumored cause of death

• Old Lace companion

• Old Lace's partner

• Once-common pesticide component

• One of the metalloids

• One of two elements that ends with the letter C

• Partner of Old Lace

• Pesticide ingredient

• Poison in classic mysteries

• Poison in some mysteries

• Poison in some whodunits

• Poison used in a play

• Poisoner's choice

• Poisonous atomic number 33

• Poisonous element

• Poisonous element that flavors a sauce in You're a Mean One, Mr. Grinch

• Rat poison poison

• Straight As in chemistry?

• Stuff in rat poison

• Toxicology concern

• Whodunit poison

• Whodunit weapon