Tracy's The Fine Art of Poisoning Television Third and Tenth Doctors in Doctor Who regenerated due to radiation poisoning. The Fifth Doctor regenerated due to poisoning from the substance Spectrox, giving the antidote to his also poisoned companion Peri Brown. King Joffrey, Olenna Tyrell, Gregor Clegane, and Jon Arryn in Game of Thrones Peter III of Russia in The Great Plays Joseph Kesselring: Arsenic and Old Lace William Shakespeare: Romeo commits suicide by poison in Romeo and Juliet Hamlet, King Claudius, Gertrude and Laertes in Hamlet, Prince of Denmark Imogen in Cymbeline See also List of people by cause of death and List of unusual deaths Mass suicide Lethal injection Food poisoning Food taster Arsenic poisoning Cyanide poisoning Lead poisoning Mercury poisoning Pesticide poisoning Poisonous animals Poisonous plants Thallium poisoning Venom References 10.Journey to the seemingly idyllic world of Native Hawaiians. Synopsis https://www.imdb.com/title/tt8084776/plotsummary#synopsis Poison