When a medical student and military reserve officer disappears during a run through a Philadelphia park, foul play is immediately suspected.

The discovery of her body incriminates a deadly serial offender who is finally identified and charged in this special breaking update episode of Last Seen Alive.

Music Seen Alive. Thanks for listening to this breaking update episode of Last Seen Alive.

I'm your host, Leah, crime analyst by day and true crime storyteller by night.

And as always, I'm your co-host, Scott.

And I gotta say, this is one of those cases that has stuck with me.

And every time I go to a park, I'm always extra vigilant because of it.

Absolutely. It's always so good to be able to air one of these update episodes letting people

know that a case has been solved. But this one is especially good because this is somebody

who has offended over and over again. And had he not been caught, he would have harmed

and probably killed even more victims.

A quick word of caution.

This episode contains mentions of sexual assault.

Please listen with care.

Three years ago, we told you the story of Rebecca Park's then-unsolved homicide.

At the time, her killer was nameless and still at large.

But things have very recently changed.

Finally, after 20 years, Rebecca's alleged killer has been identified and charged.

Now, I know it's been years since we covered Rebecca's case, so I'll go ahead and recap what happened to her in the summer of 2003.

Rebecca Park was last seen alive on July 13, 2003.

When last cited, she was doing something she did frequently, going for a run around Fairmont Park,

the largest municipal park in the city of Philadelphia. Sprawling over more than 2,000 acres,

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