Fearful that Armando would find out the truth, Dahlia filled the bottle in her necklace with a liquid poison, which is almost impossible to detect and is lethal in just two teaspoons, stolen from her university's pharmacology lab.
Armando had been investigating the murder of Dahlia's stepsister, Valerie, and suspected her involvement. On August 27, 2013, Dahlia Hawthorne met with defense attorney Diego Armando in the courthouse cafeteria. The necklace itself is a gold foxtail chain.
The pendant is a translucent blue bottle surrounded by a gold heart with a red gem on top where the lid is.