Summary
Overview
This episode chronicles the unprecedented police investigation following Alexander Litvinenko's death from polonium-210 poisoning in London. Detectives follow a radioactive trail across the city, testing over 750 people and 40 sites, while navigating Russian obstruction during interviews with suspects Andrei Lugovoy and Dmitry Kovtun. The investigation reveals the suspects' carelessness with the deadly substance and culminates in murder charges that Russia refuses to honor, exposing the UK's weak diplomatic response.
Understanding Polonium-210: The Murder Weapon
The investigation reveals that Litvinenko died from acute radiation syndrome caused by polonium-210, a rare radioactive isotope that can only be produced in nuclear reactors. The poison works by emitting alpha particles that act as 'atomic bullets,' destroying cells at close range. Tests show Litvinenko ingested 4.4 gigabecquerels of the substance, with only 5% inhaled and the rest consumed in food or drink, making it clear he was deliberately poisoned.
- Post-mortem examination was one of the most dangerous ever undertaken in the Western world due to radiation
- Polonium-210 can only be produced by bombarding bismuth-209 in a nuclear reactor, requiring state-level resources
- Alpha particles from polonium act as 'atomic bullets' that kill cells by depositing massive energy over short distances
- Tests showed Litvinenko ingested 4.4 gigabecquerels, with 95% consumed rather than inhaled
" Polonium in some ways was the best and the worst murder weapon. The best because actually it's pretty hard to detect and hadn't been seen before. "
" Alpha particles can be thought of as atomic bullets capable of killing at a cellular level. "
Following the Radioactive Trail Across London
Because polonium is radioactive, investigators could track its path through London with unprecedented precision. The investigation became a public spectacle as white-suited forensic teams closed off sites across the capital, from Mayfair restaurants to Emirates Stadium. Over 750 people from 52 countries were tested, with 139 showing contamination. The ability to distinguish between primary and secondary contamination proved crucial in identifying suspects and reconstructing events.
- COBRA emergency meetings held as reporters demanded to know if the public was safe
- 40 sites tested across London with 750 people from 52 countries checked for contamination
- 139 people showed some degree of polonium contamination, including hotel staff and Litvinenko's family
- Hair samples revealed two separate polonium intakes: mid-October (100x smaller) and November 1st
- Initial suspicion fell on Scaramella due to contamination at the sushi restaurant before the Pine Bar meeting
" As he comes out of COBRA, reporters shouting to him, are people safe? And he's thinking to himself, I don't know. Because no one's ever dealt with this before. "
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