01126cam a2200193 a 4500020003200000040000800032082002600040100002200066245003000088250001100118260003900129300002500168520061100193650004300804650003000847650002500877650001200902650001800914  a0066214718 (acidfree paper)  cDLC00a813 WIL 2004 A093 Or.1 aPeters, Elizabeth10aGuardian of the horizon /  a1st ed  aNew York :bWilliam Morrow,cc2004  axii, 399 p. ;c24 cm  aOusted from their most recent archaeological dig and banned forever from the Valley of the Kings, the Emersons are spending a quiet summer at home in Kent, England, when a mysterious messenger arrives. Claiming to be the teenage brother of their dear friend, Tarek, Prince of the mysterious Lost Oasis, the charismatic herald brings troubling news of a strange malady that has struck down Tarek's heir and conveys his brother's urgent need for help only th Emersons can provide. The family sets off in secret for the land time forgot to a mountain fortress from which they narrowly escaped ten years before 0aPeabody, Amelia (Fictitious character) 0aExcavations (Archaeology) 0aWomen archaeologists 0aBritish 0aEgyptologists