'
Sheila the Prefect continues the schooldays of best friends, Sheila Chester, and Beryl Lindsay, who were introduced in
Sheila at Happy Hills [...] In
Sheila the Prefect Beryl is now Head Girl of Riverview and Sheila is a Probationer Prefect. It is the end of term and the pair are preparing to attend a Christian Union Camp with other schoolgirls in the school holidays [...] During the camp the girls discover one of their classmates, Dorothy Grant, had an older sister who died in a train accident, though no body was ever found. Beryl thinks that there may be some mystery behind it and soon the girls have an opportunity to investigate some startling coincidences' (Rachel Crawford,
Bonza Schooldays).