September 6, 1970.

South Lake Tahoe, California.

25-year-old nurse Donna Lass is nearing the end of her shift at the Sahara Tahoe Hotel

Casino when she vanishes without explanation.

Donna's car is found parked outside her apartment complex, and her landlord and boss soon received

phone calls from an unidentified man who claims that Donna will be absent for a while because

of a family emergency.

However, this claim turns out to be false, and Donna is never seen again.

Months later, a reporter receives a postcard from the infamous Zodiac Killer who implies

that Donna Lass was one of his victims.

After that, the trail went cold.

Hello everyone and welcome to the latest mini-sode of the trail went cold.

I'm your host Robin Warder, and we are continuing our Halloween theme cases for October.

For the past few years, it's become an annual tradition for me to publish creepy Halloween

themed articles at Crack.com, so for the entire month, all of the trail went cold's

episodes and mini-sodes will be analyzing cases which I have covered in those articles.

Today's mystery was featured in my very popular Crack article, The Sixth Creepiest Unexplained

Phone Calls, which was published in October of 2014.

If you're listening to this podcast, I'm sure you've heard of the Zodiac Killer, as

his identity continues to remain one of the most famous unsolved mysteries of all time.

Well, today, I'm going to be looking at a missing persons case which, on its own, might

not have garnered a lot of attention, but it's attained some notoriety because of the

...