In Madeline’s hometown of Chicago in June 1891, life is brimming with new industry. The amateur sleuth has recently arrived home from a trip abroad and brought with her two favorite friends. They plan to enjoy a summer of doing nothing but taking in the sights of the city until the ladies volunteer for a Chicago first, an ambulance service that begins.
When they urge Madeline to attend one of their sessions to meet with someone who says all manner of mystery things are happening in the park. He wonders if it’s attributed to the Valley Gang.