School Friend #190

School Friend #190 contains three main stories. "The Riding Mystery at Moorland School" follows Wendy Glynn, the new riding instructor, as she receives a mysterious message warning her of danger at the old clock tower on the moors; the message and the tower's chiming become central to an unfolding mystery involving the girls and their horses. "Lonely Boy of Lonely Isle" by Hazel Armitage concludes with Lynne and Laurie discovering a hidden cave containing stolen violins and uncovering the identity of the thief who had taken them in a boat. "Nina—The News Reel Girl" by Jane Preston sees Nina Taylor, a newsreel photographer, traveling to Scotland for New Year's Eve celebrations, where she becomes entangled in a mystery involving the Ferguson bell tower and discovers a hidden rope and bell mechanism while investigating a locked door.