Listen to a short expert from 40 Years Cold episode 2, The Science, coming this Monday, June 24. 

A scientific breakthrough helped catch a notorious American serial killer. Could that same technology be used to catch Susan Tice and Erin Gilmour’s killer? As they get closer, a shocking turn of events upends their plan.

Toronto Star subscribers have exclusive early access to all episodes. Non subscribers will get new episodes each Monday. If you are not a Star subscriber, please visit thestar.com/subscribe. 

Audio sources: CBS Philadelphia