Readers of Nina Laden's The Night I Followed the Dog (1994) and Bruce Ingman's A Night on the Tiles (1999) will readily accept this proposition that babies, too, lead a secret life in the wee hours. Here Baby Brenda rises to raid the refrigerator, then wiggles through the cat door to join her friends at the Midnight Café—where a tense encounter with Baby Mario and his buddies dissolves into a messy, joyous mêlée, thanks to a wagonload of wibbly-wobbly Jell-o. Later, tummies full, the stubby revelers wash off under sprinklers and scatter to their homes. James fills her luminous scenes with squads of exuberant diaper or Doctor Denton–clad toddlers, along with the occasional dog, and closes with a close-up of carrot-topped Brenda cheerfully upending a bowl of cereal over her head at the breakfast table, to the tune of a resonant belch. Parents and older sibs who wonder why babies get so much more pleasure out of playing with food than eating it will understand at last, thanks to this follow-up to The Midnight Gang (1996). (Picture book. 5-8)