Human leadership has been compromised.

In this one, Ian and Liv reach the conclusion of their two-part series on Heaven's Gate, a religious cult which ended tragically in mass suicide in 1997. This one has it all: full page newspaper ads, computer start-ups, telescopes, comets, so what more could you ask for? Aliens? Unfortunately for Marshall, that's the ONE thing his "alien cult" doesn't have.

Also, Liv confirms that human leadership has indeed been compromised. Ian learns that cable TV still exists.

Double Also, dial 988 for the Suicide & Crisis Lifeline. It's completely free to call. Check in on your friends!

Friends don't let friends join cults.

In this one, Ian and Liv talk about a religious cult that began in the 1970s, "The Class," which barely survived for 20 years until the remaining 39 cult members, along with their leader, committed mass suicide in 1997. Eventually, this became cult became known as "Heaven's Gate," and has since become famous not only for their mass suicide, but the sheer absurdity of events that the cult leaders orchestrated during its span of two decades.

Spoiler Alert: The aliens don't arrive in Part 1.

Also, Liv gains self-confidence. Ian learns about the post office.

Just the tip.

In this one, Liv and Ian talk about a mudslide/landslide/avalanche that struck the town of Aberfan, Wales, in 1966. Among the victims were children in a school that was in the center of the mudslide's path.

Also, Ian discusses an alternate version of Shrek. Liv wants to go to Applebee's.

The Aberfan Disaster official tribunal report:

http://www.mineaccidents.com.au/uploads/aberfan-report-original.pdf