Written by Saladin Ahmed. Art by Cory Smith. Cover by Javi Garron. MORALESES VS. MONSTERS! Miles is taking on his biggest responsibility yet--babysitting his new little sister, Billie Morales! But fussiness and feeding are the least of their problems--there's SOMETHING UNDERGROUND! Meanwhile Miles' uncle Aaron made a deal with a different kind of beast--ULTIMATUM--and he's about to get bit. 28 pages, full color. Rated T