| Poison |
| Element 33 |
| Poison, As |
| Toxic element |
| Strong poison |
| Deadly poison |
| As, chemically |
| #33 on a table |
| Deadly element |
| As, in formulas |
| As, to Einstein |
| Whodunit poison |
| Metallic element |
| ___ and Old Lace |
| As, for Einstein |
| Christie element |
| Pesticide poison |
| Rat poison poison |
| Poisonous element |
| Toxicology concern |
| Old lace's partner? |
| Partner of Old Lace |
| Mystery-story poison |
| Pesticide ingredient |
| One of the metalloids |
| Poison in a 1939 play |
| Insecticide ingredient |
| Old Lace" accompaniment |
| Companion of "Old Lace. |
| Element in insecticides |
| Murder mystery element? |
| Poison in some mysteries |
| Poison in some whodunits |
| As, on the periodic table |
| Element of many whodunits |
| Straight As in chemistry? |
| Poisonous atomic number 33 |
| What gets As in chemistry? |
| Element in murder mysteries |
| Killer in a Kesselring play |
| Poison in classic mysteries |
| Poison used in a play and film |
| Killer in some murder mysteries |
| Once-common pesticide component |
| Napoleon's rumored cause of death |
| Subject of a Lindsay-Crouse play. |
| Element of many murder mysteries? |
| ___ and Old Lace" (play and movie) |
| Chemical element in some whodunits |
| Element forming poisonous compounds |
| Suspected cause of Napoleon's death |
| Element in many Agatha Christie books |
| ___ and Old Lace" (1944 Cary Grant film) |
| Element" of surprise in a murder mystery? |
| Poison used in pesticides and weedkillers |
| ___ and Old Lace" (Joseph Kesselring play) |
| Poison used by old ladies in an old comedy |
| It's below phosphorus on the periodic table |
| Elderberry wine additive, in a classic film |
| It's detected by the Marsh test, in forensics |
| Elderberry wine additive, in a Kesselring play |
| One of two elements that ends with the letter C |
| Abby and Martha's poison of choice, in a 1939 play |
| Ingredient of the Brewster sisters' elderberry wine |
| Cause of Philip Boyes's death in a Dorothy Sayers novel |
| Lethal additive to elderberry wine, in a Kesselring black comedy |