B.B. Ullman

A Wrinkle in Time meets Stranger Things in an out-of-this-world fast-paced middle grade story about a sister and her special little brother fighting to save the world from an interdimensional catastrophe.   Mary Day's life has always been different, because her little brother, Albie, is different. He doesn't speak, but he can communicate with Mary via mental telepathy, sending her-and her alone-"mind memos." To Albie, Mary is Pearl, the person he holds most precious.
Then, one snowy day, Albie transmits an alarming two-word message: Bad order. Soon after, Mary and her best friend, Brit, discover a mysterious red mist in the woods that seems to draw them in .