Due to the graphic nature of this killer's crimes,

listener discretion is advised.

This episode includes dramatizations and discussions of murder and assault

that some people may find offensive.

We advise extreme caution for children under 13.

As the old saying goes, home is where the heart is.

It's where we feel safest and most comfortable.

It's where we let our guard down, kick off our shoes and relax.

We're fiercely protective of our homes. We install alarm systems and train family

pets to stay alert to intruders. Despite all these precautions, we let strangers

into our homes all the time.

When we ordered takeout, a stranger delivers food to our door.

Cable and internet providers still send their employees to homes to install services, and we let them inside. Gas companies send their

employees to read your home's gas meter. We don't know them, but we trust them

because they're performing a service.

They're just doing their jobs, we think.

They can't possibly be a danger to us, we assume.

But in the 1960s, the Boston Strangler took advantage of that kind of trust.

From 1962 to 1964, the infamous criminal raped and murdered 13 women inside of their homes in the

Boston area.

These crimes are primarily attributed to a military veteran

named Albert DeSalvo,

...