"The first few years of Brian Reyes' life were unremarkable--nothing weird about this kid, no sir. Then, one day, a bump appeared on his head, and it grew... and grew... and grew until it was a full-blown, sparkling, singing unicorn horn. That's absolutely the last thing a shy kid like Brian wants, but destiny waits for no unicorn boy. Luckily, Brian has his reassuring pal Avery to keep him grounded as weird occurrences start stacking up, like Brian's...

Katie is dreading the boring summer ahead while her best friends are all away at camp -- something that's way out of Katie and her mom's budget. But when Katie gets a job catsitting for her mysterious upstairs neighbor, life gets interesting. First, Madeline has 217 cats and they're not exactly normal cats. Also, why is Madeline always out exactly when the city's most notorious villain commits crimes? Is it possible that Katie's upstairs neighbor...