Daily Mail UK Revealed: Colombian Dragons' Den star pulled from Thames after 'poisoning two schoolgirls with thallium-laced chocolate raspberries' is also being probed over the mysterious death of her ex-lover's wife four years ago
Zulma Guzman Castro is accused of killing Ines de Bedout, 14, and her close friend, Emilia Forero, 13, after they died in hospital days after eating the poisoned sweet treat.