There's been a terrible earthquake in Tiveria, and the mischievous twins Peretz and Zorach must escape the city with their mother - and, of course, their donkey Sambatyon. Along the way to Yerushalayim, they encounter a dangerous missionary, a legendary healer, and an Arab camel owner, leading to a host of grand adventures. But where is the family's treasured mezuzah, written by the scribe of the Vilna Gaon? Will the twins ever recover it? When will the twins and their mother meet up with their father, who wasn't in Tiveria when the earthquake struck? Who is Kalman the missionary, and what is he plotting? Will Marcus Steingold, the tourist from Prussia, succeed in holdingonto his wooden camel? Can Reb Manish the Yerushalmi tame the twins' high spirits and channel their energies toward more spiritual pursuits? Above all, where is the treasured mezuzah? Uncover the answers to these spine - tingling questions in this action - packed, meticulously researched historical story.