How the capture of a serial killer father led to a breakthrough in his own daughter’s separate murder case

The case of Melissa Wolfenbarger, a 21-year-old married mother-of-two, has been a mystery for years. Now a suspect faces trial - (Supplied)

When working on a cold case, there is no guarantee that a murder will be solved — and even if it is, it often takes years or even decades.

In the case of Atlanta mother Melissa Wolfenbarger, it took 25 years — with the help of a podcast, and in a bizarre twist, her serial killer father.