With Flea's life in icy tatters, he's glad to be back in the human world where he can appreciate being ignored by others. But he also watches first-hand as the world turns colder and snowier, as Jack Frost expands his snowy kingdom. The evil ice demon's last words to him play over and over in Flea's mind even while human news reports of a new 'wintry' killer play on the TV and Internet. As if that's not bad enough, two unexpected elves are sent to protect Flea but only make him feel worse...Back in the North Pole, the elves prepare not only for a war that seems unavoidable, but also for the invasion of the world's greatest weapon, which had once been in their possession before Flea lost it at the South Pole. He's not sure whether to be more worried about his own safety or Santa's. Either way, the elves distrust him more than ever, his brother hates him more than ever, his friends are more preoccupied than ever and he has an eerie feeling again that a traitor is living among the rest of the elves...The Frostie Challenge is the penultimate book in Flea's Five Christmases and answers even more questions about the secrets of Santa, Mrs. Claus, Jack Frost and Christmas!OTHER BOOKS BY THE AUTHORFLEA'S FIVE CHRISTMASESBOOK ONE - THE NORTH POLE CHALLENGEBOOK TWO - THE RUDOLPH CHALLENGEBOOK THREE - THE JACK FROST CHALLENGEBOOK FOUR - THE FROSTIE CHALLENGEBOOK FIVE - THE SOUTH POLE CHALLENGE now available!KEEPER OF THE WATER TRILOGYBOOK ONE - DRINKING LIFEBOOK TWO - RECRUITSBOOK THREE - THE WATER QUEENSTHE COMET CLEMENT SERIESBOOK ONE - THE INNER CIRCLEBOOK TWO - INTERCEPTIONBOOK THREE - THE NEW SPACE RACEBOOK FOUR - THE THREE ARKSBOOK FIVE - EVACUATION EARTHBOOK SIX - FINAL DAYSBOOK SEVEN - IMPACTBOOK EIGHT - UNINVITEDBOOK NINE - TAKEOVERBOOK TEN - MISSION: SURVIVALBOOK ELEVEN - RELOCATIONBOOK TWELVE - A SECOND CHANCECRYO-MANCryo-Man - Book 1Robotropolis - Book 2Dearborn - Book 3Beyond River City - Book 4LIFE, INC. - If you could learn the exact moment of your death, would you? If you could see a deceased loved one for one more day - at the cost of one year of your life - would you? These are the answers Life, Inc. wants to know...Eddie and Jeremy Go to the Aquarium