The Boyfriend Mystery (Kids on the Case, 2)

Mary Ann Page and Kolleen Kelly are looking forward to their fifth-grade at Pine Bend Elementary School. Their teacher, Ms. Pat Benton, is new to the school and, as it turns out, she's young, lively, and always makes sure things in the classroom are kept fun and interesting. But is there a secret in Ms. Benton's private life? ... When a eerie-looking stranger begins to follow their teacher everywhere she goes, it's time for the guessing to end and the sleuthing to begin