Alyssa was born to be a monster collector. Her whole family watched scary movies together and enjoyed sharing anything and everything creepy, spooky and macabre. By the time she was a little girl, Alyssa was collecting monster memorabilia. As she shows us today, her most prized possessions are her female-centric monsters, like the Bride of Frankenstein and Queen of the Dark Forest Barbie due to their "girl power" independence, but she still treasures and is proud to show off some other creepy collectibles like Frankenstein, Dracula, the Creature and Godzilla. Joining us at Alyssa's haunted house is a toy shop owner and monster lover himself, expert Michael Tomaso, who'll evaluate Alyssa's monstrous collection and try not to frighten her with his terrifying trade offer.

A devoted collector ever since he was a kid, Larry Strothe's monster-sized collection features everything from a life-sized Creature to a hard-to-get-Christmas ornament to some "Monster Magazine" cover art.

With more than 4000 spy and espionage-related collectibles, Danny's obsession for all things spy began after seeing some spy shows and movies in the 1960s; his collection includes some of the most iconic items, like spy shoes and cigarette cases.

Marica Tysseling plunged into the movie props and costumes world as the owner of Star Wares on Main, a resale shop catering to Hollywood's biggest names and production companies; after selling her business, Marcia held onto her favorite memorabilia.

Dave's mother inspired him to begin collecting at a young age, and her support paid off with a huge collection dedicated to "The Flintstones," from rare collectible figurines to a plush doll gifted to him by "Flintstones" creator Joseph Barbera.

Collecting for almost 50 years, Wendy has all the items you'd expect, such as photos, a lunchbox, and a full set of trading cards, but not many "Brady Bunch" collectors can lay claim to needlepoint made by Alice, or a blueprint of the Brady house.

Laurence Sheinman is bonkers about Bugs Bunny; his collection includes a bronze statue, roller skates and a special jacket; Kate Martin appraises Laurence's collection and tries to make a deal with him.

Inspired by his uncle, Nathan Lippe develops a unique passion for collecting antique advertising at a young age; now fueled by the thrill of the hunt, Nathan scours the country.

With thousands of "Ghostbusters" collectibles, Robert O'Connor's love for the movie and its memorabilia doesn't stop at just collecting; he's even made his own ghost traps and proton packs that are often mistaken for the real thing.

David Poley has amassed an enterprise-level collection of rock music memorabilia, after a childhood spent sneaking backstage at rock concerts.

Former Second City performer Dave Sinker combines his passions for performing stand-up comedy and collecting memorabilia into The Comedy Shrine, a comedy club and museum that houses thousands of comedy-themed collectibles.

Leslie Livingood lives, breathes, and collects Paddington Bears; her lifelong obsession began at age 5 after she got her first Paddington at a garage sale, then Leslie began collecting the British bear and never stopped.

Dave became enamored with "Star Trek" as a kid and never looked back; since the 70s he's been an avid collector of not only screen-used props like Tribbles or the space panel button from Kirk's chair but has also amassed some replica items.

Allen has been collecting G.I. Joes since the 1980s, and now he has a basement filled with over 100,000 G.I. Joe collectibles; Allen shares his favorite items and vast knowledge of the Real American Hero.

From vintage movie lunch boxes to Star Wars action figures to drool-worthy sports memorabilia, this man's collection belongs in a museum.

Gilligan's shirt, Fonzie's jacket, and Jeannie's harem costume may be the capstone in this finely curated classic TV collection, along with Stewart's favorite comedian, Jackie Gleason, and his comedy classic, "The Honeymooners."

Stefan has an insatiable obsession with fans and all sorts of other antique electrical appliances; his collection includes the very rare Tesla fan motor, an old chamber stove, and various antique fans; Judy Martin appraises his items.

Lisa steps into Allen Machielson's Whoseum and is transported through time and space to view a collection of Dr. Who memorabilia; Allen's beautifully displayed collection captures the growth of his passion for the longest-running sci-fi series.

Mike Haviland is the man of Mayberry with his impressive collection of "The Andy Griffith Show" memorabilia; expert Rob Klein appraises Mike's favorite pieces and tells his own stories from his childhood spent living across from Andy Griffith.

Kenneth Ladd is the owner of a museum filled with magic memorabilia and a theatre where he performs as a magician; Kenneth's son Kevin helps collect and curate the magic memorabilia.

Rob Klein joins Lisa Whelchel to appraise Vivian Eisenstadt's collection of over 2,000 Wonder Woman items and offers the superfan the chance to trade one of her favorite pieces for an item Rob considers the "holy grail" of Wonder Woman memorabilia.

Jack Condon loves "Charlie's Angels" and has a Guinness World Record-holding collection; Kate appraises his treasures and tries to convince Condon to trade one of his items for two other pieces of memorabilia in a deal he can't resist.

A high school band teacher who has outfitted his basement with a life-sized reproduction of the Jupiter Two flight deck and a talking B9 robot from "Lost in Space," is visited by a fellow fan and builder of movie and television prop re-creations.

Patrick Brickley, a lifelong lover of film and television, shares his favorite props and costumes and is enticed by Mark Short to trade one of his beloved pieces for another screen-used item that is on his wish list.