What is the summary for the sisters 8 book3?

Answer 1

It's Georgia's month. She gets her gift early, which is a gold compact, but sends it back. At school, the McG is absent and a woman named Serena Harkness becomes the substitute. At home, Georgia becomes invisible, which is her power. After Mrs. Harkness's St. Patrick's Day parade, she invites the Eights to her house for a Pizza. Instead, Serena locks the eights in a room with the McG, who Serena has held hostage for two weeks. Georgia turns invisible and gets out of the room. Then Mr. Pete comes and saves them, but not after the eights discover Serena is a relative! Georgia searches for gift and finds it on the last day of her month.