Book excerpt: Martha worries that her recent bouts of bad luck might be contagious! Uh-oh. Martha walked under a ladder—and then she broke a mirror—so now she thinks she’s jinxed! Helen tries to explain that all the accidents are just coincidence. But when a nearby toddler stumbles and a waiter takes a clumsy spill, Martha worries that her bad luck might be rubbing off on everybody else. Will Martha be spreading bad luck for seven whole years? Includes a "Test Your Knowledge" activity on common superstitions.