The kraken is the biggest monster in the sea. And in the 1950s, it seems to be headed straight for Boston! Marcus, Jorge, and Amy travel in Tío's time machine to the world of the Red Sox and Boston Harbor, racing to find the kraken and send it back to the northern seas where it belongs. Their journey takes them from Fenway Park to a high seas adventure as they learn about the culture of the 1950s, the mythology of the kraken, and even some marine biology.
It is 1972--a cold summer in Minneapolis, Minnesota. Tío has sent the monster hunters to find a dangerous werewolf. They need to stop it from hurting others--and from getting hurt itself. But is it really that dangerous? Join Marcus, Elena, and Fiona to find out. They explore downtown Minneapolis and the Minnesota State Fair. As they search for the werewolf, they learn about 1970s history and culture, and make friends with the theater folk of Minnesota along the way.
Elena, Jorge, and Marcus must brave the Chicago winter in search of a vampire. In a bleak, post-Depression city, the children must not only find this creature of the night, but also find her lost locket. Will it be downtown at Marshall Fields? Or at a roller derby event? And will they find it in time to get home? Readers will find out, as they learn about the 1930s--and how to survive an encounter with the undead.
Jorge, Elena, and Amy need to find a poltergeist before it reveals itself to the world. The only catch? It's in Seattle--and it's in the 1990s. Join the gang as they travel back to the rainy "Emerald City" in 1996. There, they will chase the poltergeist, racing against the clock to lay it to rest before it lays waste to historic Pioneer Square. Readers will learn about the history, culture, and fashion of the late 1990s, and meet someone very special along the way!
Tío sends Elena, Jorge, and Marcus to a small town in Iowa in 1983. This sounds like a boring adventure, until they learn that they're going to one of the first video game competitions--and they're there to identify and hide a flock of zombies from the public! Will they be able to find and save the zombies in time? And will Marcus ever get to play an original PacMan arcade game? Join the Secret Society of Monster Hunters to find out.
Tío has an urgent mission for Jorge, Elena, and Amy. They must voyage to Harlem in the late 1920s. A fairy with a beautiful voice has been imprisoned. They must rescue her from her gangster captors before history learns of her and her fairy kind! Readers will learn about the Jazz Age and the Harlem Renaissance as they embark with the monster hunters on a thrilling adventure through jazz clubs, the streets of Harlem, and Central Park.
Elena, Amy, and Fiona are going on a wartime mission! They must join Rosie the Riveter and other women workers at the Bath Iron Works, a huge shipyard in Bath, Maine. But they're not there to build ships--they're looking for a huge red dragon! They have to be careful not to blow their cover, and to stay on this dangerous dragon's good side. Join the girls as they search for the dragon, outwit evildoers, and learn about the history of the 1940s.