This ancient Celtic festival marked the end of the harvest season and the beginning of winter.
What is Samhain?
This unidentified killer taunted police with coded letters in Northern California during the late 1960s.
Who is the Zodiac Killer?
The boundary separating advancing cold air from warmer air is known as this feature.
What is a cold front?
This mineral defines a hardness of 10 on the Mohs scale.
What is diamond?
This masked killer stalks campers in the Friday the 13th franchise.
Who is Jason Voorhees?
Immigrants from this country helped popularize modern Halloween traditions in America.
What is Ireland?
Known as the "Milwaukee Cannibal," this killer was arrested in 1991.
Who is Jeffrey Dahmer?
The instrument used to measure atmospheric pressure.
What is a barometer?
This gemstone variety of corundum contains chromium impurities.
What is ruby?
In A Nightmare on Elm Street, the fictional Ohio town where Freddy Krueger's victims live.
What is Springwood?
π** Daily Double **π
These were originally carved for protection before pumpkins replaced them in North America.
What is a Turnip?
This serial killer worked at a clown-themed charity and was known as the "Killer Clown."
Who is John Wayne Gacy?
The calm center of a hurricane is known as this.
What is the eye?
The piezoelectric properties of this crystal make it valuable in watches and electronic oscillators.
What is quartz?
This actress appears in the original Halloween (1978), The Fog (1980), and Prom Night (1980), earning the title "Scream Queen."
Who is Jamie Lee Curtis?
This medieval practice of exchanging prayers for the dead in return for food is considered a precursor to trick-or-treating.
What is souling?
The BTK Killer's nickname stands for these three words.
What are Bind, Torture, Kill?
Clouds associated with thunderstorms and severe weather often belong to this cloud type.
What are cumulonimbus clouds?
This green crystal shares its name with the August birthstone.
What is peridot?
The holiday setting for the 1981 slasher film in which a miner's attire became an iconic killer costume.
What is Valentine's Day?
This Gaelic month begins with the festival from which Samhain takes its name.
What is Samonios?
This former police officer became known as the "Golden State Killer."
Who is Joseph James DeAngelo?
Meteorologists use this radar technology to measure precipitation and storm movement.
What is Doppler radar?
This purple variety of quartz is often associated with calmness.
What is amethyst?
This director created the Scream franchise after previously directing A Nightmare on Elm Street.
Who is Wes Craven?