A new friend gives Hans and his sister Gretel enough money for one pair of ice skates, so Hans insists that Gretel enter the grand competition for silver skates, while he seeks the great doctor who consents to try to restore their father's memory.

When Lizzie and Gael share an irresistible challenge, to find the peacock ring that once belonged to artist Frida Kahlo, Paloma decides it is the perfect way to honor her father.

"It was only a few days ago that Tess Biedermann, Theo Biedermann, and Jaime Cruz, along with a mysterious figure from the past, managed to survive an assault on the location of the latest clue in the Morningstarr cipher--and, in the process, made a shocking discovery about their own connection to this one-hundred-sixty-year-old enigma. Now the friends are divided. Tess and Theo have no idea what the photo they found in Greenwood Cemetery means, but...

Thirteen-year-old Chloe and her younger brother Parker are transported back to 1934 Harlem where they meet Ella Fitzgerald the day before she wins Amateur Night at the Apollo, but with Ella making plans to miss the event, the kids have to get her to the Apollo, and convince her to sing instead of dance.