Flickering lights. Temperature shifts. Odd noises. Liz, Mack, and Cage reassure a scared teen that those are just part of the charm of an old apartment building. But the boy swears it's more than that, and it has something to do with Number 301--even if nobody lives there. As the adventure unfolds, striving readers practice decoding words featuring CVCe, CCVCe, consonant clusters, and consonant trigraphs, as well as inflectional verb endings -ed and -ing. Every Spark Decodables book serves older readers who need practice with foundational literacy skills, combining multiple aspects of the Science of Reading to support small group instruction, independent reading, and reading practice at home.