If a reader did not know that Ellery Queen is normally associated with the mystery genre, which sentence would first indicate that "Object Lesson, Part 1" is a mystery?
Ellery hurried down West 92nd Street toward the main entrance of Henry Hudson High School stealing guilty
glances at his watch.
Miss Carpenter, who had come to him with an unusual request, had struck him as the sort of dedicated young
person who would not take kindly to a hitch in her crusade.
Beyond establishing that the crimes were the work of the same boys, who were probably students at Henry
Hudson High School, the police had got nowhere.
Miss Carpenter, walking home from a movie late the previous Monday night, had seen three boys dive out of a
smashed bakery window and vanish into an alley.
PLEASE HELP