After graduating Harvard with a degree in biochemistry, and following an eight-year career as an actor in musical theater, Peter Lerangis took another left turn into writing and has been following that path ever since. He cut his authorial teeth on Hardy Boys novels before graduating to The Three Investigators. After the demise of the series, he was forced to go undercover as the secret boy ghostwriter for The Baby-Sitters Club series (approximately 40 titles!), during which time (and after) he also wrote two best-selling teen thrillers (THE YEARBOOK and DRIVER'S DEAD), four hilarious middle-grade novels (SPRING FEVER!, SPRING BREAK, IT CAME FROM THE CAFETERIA, and ATTACK OF THE KILLER POTATOES), the award-winning six-book sci-fi/mystery series WATCHERS, and the two-book survival epic, ANTARCTICA. His movie novelizations include THE SIXTH SENSE and SLEEPY HOLLOW, as well as many Disney movie tie-ins under the name A.L. Singer (an anagram of "Lerangis").