Pollen, Chalk and DNA
- Episode aired Oct 25, 2021
![Expert Witness (2021)](https://m.media-amazon.com/images/M/MV5BZWRiNGZlY2UtMWExNS00YWI1LWIwZGQtYzFlMGIxZjE4Y2FhXkEyXkFqcGdeQXVyNjU0NTI0Nw@@._V1_QL75_UY281_CR1,0,190,281_.jpg)
How expert analysis of nettles and chalky soil helped catch killer Ian Huntley, and how advances in DNA techniques finally solved the murder known as Beauty in the BathHow expert analysis of nettles and chalky soil helped catch killer Ian Huntley, and how advances in DNA techniques finally solved the murder known as Beauty in the BathHow expert analysis of nettles and chalky soil helped catch killer Ian Huntley, and how advances in DNA techniques finally solved the murder known as Beauty in the Bath