Radioinfo's Jen Seyderhelm speaks with Hedley Thomas about The Teacher's Pet podcasts, the new book and Thomas's conversation tour.
The Teacher's Pet podcast, investigating the disappearance of Lyn Dawson in 1982 and the later conviction of her then husband Chris for her murder, has been downloaded more than 60 million times worldwide and is the only podcast to be No 1 in Australia, the US, UK and New Zealand.