Fiction sequels hitting shelves in August include babysitter growing pains, an unlikely group of heroes, a spud’s mission back in time, and more.

Best Babysitters Ever: The Good, the Bad, and the Bossy

by Caroline Cala (HMH, Aug. 6, $13.99, ISBN 978-1-328-85090-4)

In the second book in the Best Babysitters Ever series, friends Malia, Dot, and Bree set their entrepreneurial sights high, but their perfect plan turns to disaster when things go awry.

The Demon World

by Sally Green (Viking, Aug. 6, $18.99, ISBN 978-0-425-29024-8)

In this sequel to The Smoke Thieves, the titular group of heroes, which includes a princess, a soldier, a servant, a demon hunter, and a thief, flees to the kingdom of Pitoria to escape power-hungry King Aloysius of Brigant, who is set on using demon smoke for nefarious ends.

Sea Witch Rising

by Sarah Henning (HarperCollins/Tegen, Aug. 6, $17.99, ISBN: 978-0-06-293147-4)

Beginning immediately after the epilogue of the Little Mermaid retelling Sea Witch, this sequel delves deeper into the sea witch Evie’s story and brings sisters Runa and Alia to the fore.

Super Potato’s Mega Time-Travel Adventure

(Lerner/Graphic Universe, Aug. 6, $8.99, ISBN 978-1-5415-7287-4)

The third adventure following Super Potato—who used to be handsome crime fighter Super Max before being transformed by an evil villain—takes the hero back in time. Will he be able to prevent his potato transformation from ever happening?

Midnight Beauties

by Megan Shepherd (HMH, Aug. 13, $17.99, ISBN 978-1-328-81190-5)

Concluding the duology that began with Grim Lovelies, Anouk, a beastie, is thrust into a high-stakes deal involving marriage to her sworn enemy, a dark plot to overthrow London’s fiercest coven of witches, and a deadly trial by fire during her quest to rescue her friends, who are trapped in their animal forms.

Best Friends

by Shannon Hale, illus. by LeUyen Pham (Macmillan/First Second, Aug. 27, $12.99, ISBN 978-1- 250-31746-9)

In this sequel to the graphic memoir Real Friends, sixth grader Shannon grapples with being part of the in-crowd called The Group and the pressure to conform to its rules.

Song of the Abyss

by Makiia Lucier (HMH, Aug. 27, $17.99, ISBN 978-0-544-96858-5)

Following 2018’s Isle of Blood and Stone, this standalone companion follows 17-year old Reyna, now a Master Explorer after a year-long expedition. When raiders attack her ship and the rest of the crew disappears, Reyna must join forces with a prince from a rival kingdom and unravel the mystery of the attack.

The Story Seeker

by Kristin O’Donnell Tubb, illus. by Iacopo Bruno (Holt, Aug. 27, $16.99, ISBN 978-1-2503-0109-3)

Continuing the story of Viviani Fedeler, New York Public Library resident and budding reporter, this sequel to The Story Collector, set during the 1920s, launches Viviani on a mystery involving the peculiar disappearance of rare medical texts.