All of the above plants are deadly, but Joffrey's reaction to the poison makes one plant a far more likely culprit. Burks matched these poisons up with the details of Joffrey's reaction when dosed ...

Game of Thrones gave us a shock with the Purple Wedding and now everyone is asking: "Who poisoned King Joffrey?" While the search for the killer continues, the American Chemical Society's latest ...

It felt like it was balancing the scales a little," Weiss said. Joffrey, played by Jack Gleeson, died after drinking poisoned wine, at the hands of Lady Olenna Tyrell and Lord Petyr Baelish.

Right after she drinks the poison, she confesses to Jaime that she was the one who poisoned Joffrey, and she wants Cersei to know it. She made death look so cool, but it's sad to see her go.