Tombquest. El Libro de Los Muertos

Nothing can save Alex's life- that's what all the doctors say, but his mother knows it's not true. She knows that the Lost Spells of the Egyptian Book of the Dead can crack open a door to the afterlife, pulling her son back from the brink. When she uses the spells, five evil ancients -the Death Walkers- are also brought back to life, releasing an ancient evil.