In response to a dare, Mona, Charley, Lily, and Fang venture out on a night-time mission. / When Mona's parents go out for the night, the new babysitter comes over.
Charley breaks the ultimate taboo and leaves Mona's favorite comic book, Von Kreepsula #1, out in the rain. / Charley buys himself a hot new computer game, "Starclangers IV" and becomes so involved in the game, it takes over his life. He's inside day and night, he's always late for class, and he has suddenly adopted a permanent, glassy expression.
Hair-raising night-time howling. The mysterious disappearance of Mrs. Bryerson's poodle. / It's the annual science fair and Mona has pulled out all the stops.
Socks, shoes, vampire towels and other miscellaneous objects are vanishing, disappearing, as if vanishing into some void. / Garden gnomes are vanishing from front yards all over town and many townspeople suspect juvenile pranksters at work.
The town is in the grips of an insect invasion and no one knows where to turn for answers. A little footwork leads Mona and Charley to Herb Crofton, a visiting entomologist, who may or may not be a bug himself. / St. Faith's is holding a fashion show. All the kids are to design their own clothing and have it judged by world class super model Tiffany S. Tyk.
Mona and Charley beam a message via satellite to extraterrestrials across the universe - and, the very next day, an exchange student suddenly shows up at school. Coincidence? / Mona's attempts to ward off an imminent invasion by red moon monsters are stymied by the new next-door-neighbor - a shy, introverted girl named Lily Duncan whom she is forced to entertain for the evening.
At night Mona can hear the dreaded skeleton cowboy galloping through town on his phantom steed. / When U.N. Secretary General Harundi comes to town, Mona is disturbed to discover that he is under surveillance by the Men In Dark Suits, disguised aliens plotting world domination!
Garlic in her lunchbox, anti-vampire slogans in her locker, Mona starts to suspect that someone with an animosity towards vampires wants her out of town and soon. / When Charley falls under the spell of Lucy Lanning, a girl with THE WORST singing voice at St. Faith's, Mona's suspicions are aroused.
Mona's secret scrapbook (or, as she calls it, "The Book of the Slimy") has gone missing. / The regular cafeteria staff is on vacation and a husband and wife team by the name of Sam and Ella have taken over kitchen duties.
The day after the Philatelic Society's visit to the travelling mummy exhibit at the local museum, Reverend Gregory disappears. / It's the hottest July on record when Mona and company venture down into the deep dark recesses of Mona's basement to check out her cryogenics experiment.
When Miss Gotto moves into a new house, she enlists the help of Mona and co. to clean the place up. / At night, you can hear it - a distant, mournful wail coming from the swamp.
Charley's idol, the Man With Nine Lives, is coming to town to perform a series of high risk very dangerous do-not-ever-try-at-home motor cycle stunts. / During a freak electric storm, Mrs. Vanderplatz's greenhouse is struck by lightning.
Old Mr. Williams who lives across the street from Mona has always kept to himself. / When she is reprimanded for breaking her mother's favorite vase, a miffed Mona seeks refuge in the basement - a ten year old vampire's last sanctuary.
Eerie night time rattling. Disembodied groans. / There's a werewolf loose in the school, a furry, slobbering beast running amok in the hallowed halls of academia.
One person's junk is another person's treasure! But who, in their right mind, would throw away a perfectly good genie bottle? / During show-and-tell, Angela shows off the latest addition to her toy drawer: a line of rather creepy-looking designer dolls.
An evening's dining at a local Chinese restaurant takes a terrifying turn when the fortune cookie fortunes Mona's family receives begin to come true. / Angela has started a chapter of the Pixies, an all girl service organization devoted to being helpful -- as long as it isn't too strenuous -- and cheerful.
Mona's town is seized by paroxysms of sporadic exercise when a fitness instructor from Australia, Bruce, opens up a new fitness center. / When Miss Gotto falls ill and is replaced by a substitute, Mona immediately suspects foul play.
Mona's cousin, Dottie, prepares for her big dance recital with a certain amount of trepidation. / Angela has a new pet - a talking parrot who seems a little TOO clever to be a simple bird.
Albert Einstein? Julius Caesar? Walking around downtown? / After a mysterious clockmaker does some work on the new town clock, strange things start to happen.
The new kid in class doesn't bring a very big lunch to school... in fact he eats "like a bird". / There's something remarkable about the carefully manicured lawn and shrubs at the City Park.
It's a rainy afternoon, and Mona's tearing through the attic so noisily that her mother worries she'll wake the dead. / Ah, the fun of the fair - bumper cars, Ferris Wheels and games at kiosks with barking vendors! Mona and her pals are having the time of their lives until...dimensional warps start to occur.
The latest pre-teen pop music sensation, the "Brainwaves", is all the rage with the kids at St. Faith's. / Ever since Mona and Charley battled Von Kreepsula on his own turf and won, they've felt pretty confident that he'd be trapped forever in his comic book prison.
