Mama and Baby clap and play hide-and-seek and pat-a-cake. Mama and Baby . . . Mama? Where did Mama go? In a series of spreads, simple, bold illustrations show a mother on one side and a baby on the other, interacting in universally familiar ways -- until Mama dips out briefly, then returns to her crying child to offer comfort again. With his usual flair, the redoubtable Chris Raschka offers a reassuring moment that will resonate with mamas and babies everywhere.