bLife preservers are mandatory for this wet, wild, and wondrous adventure, the third entry in Rick Riordan's iNew York Timesi 1 best-selling Norse mythology trilogy, which features a cameo from Percy Jackson.bbrMagnus Chase, a once-homeless teen, is a resident of the Hotel Valhalla and one of Odin's chosen warriors. As the son of Frey, the god of summer, fertility, and health, Magnus isn't naturally inclined to fighting. But he has strong and steadfast friends, including Hearthstone the elf, Blitzen the dwarf, and Samirah the Valkyrie, and together they have achieved brave deeds, such as defeating Fenris Wolf and battling giants for Thor's hammer, Mjolnir. Now Magnus faces his most dangerous trial yet. His cousin, Annabeth, recruits her boyfriend, Percy Jackson, to give Magnus some pointers, but will his training be enoughbrLoki is free from his chains. He's readying iNaglfari, the Ship of the Dead, complete with a host of giants and zombies, to sail against the Asgardian gods and begi