Locke Forte-Vabien.

You are now listening to True Murder,

the most shocking killers in true crime history

and the authors that have written about them.

Gacy, Bundy, Domer, The Night Stalker, BTK,

every week, another fascinating author

talking about the most shocking and infamous killers in true crime history.

True Murder, with your host, journalist and author, Dan Zupansky.

Good evening. This is your host, Dan Zupansky,

for the program True Murder, the most shocking killers in true crime history

and the authors that have written about them.

Michael Greaseback had been a prosecutor for 22 years and thought he'd seen it all,

but nothing prepared him for the case he you're about to read and hear about,

a true crime story, where the good guys are sometimes the bad guys

and the bad guys the good.

It's a case of violent crime, with a mind-numbing twist,

but mostly it's a case about innocence and guilt.

On July 29, 1985, Penny Berenstein set out for a late afternoon jog

along a remote stretch of beach on the Lake Michigan shoreline.

Unaware that just minutes later, a deranged sex offender would shatter her world to pieces.

It would be a jog that would change her life forever in more ways than she could have imagined.

Within hours, police and prosecutors zeroed in on Stephen Avery,

...