Ferrocarrilla del Norte - Poisons: Thallium and Agatha Christie

In the poison section, we’ve had Mentxu Aiertz and Agatha Christie with us, and Agatha Christie through a novel, Pale Horse. In this novel, thallium killings are common; it is very difficult to detect that the victims have been poisoned because the effect of thallium is apparently different in each person. Mentxu has also brought us an amazing real case where thallium has been used as a poison. Next time, ricin, the last poison in this section.