The Black Spider

While Sonny is reading a book called "The Black Spider". Clancy's music teacher Miss Masters turns up at Ranger Headquarters and tells Matt about Clancy's absence from lessons and loss of interest in music. Mark suggests to Sonny Clancy is leading a double life or worse she is in the clutches of the "The Black Spider". Something is bothering Clancy but she won't tell anyone what it is. Sonny sneaks into Clancy's room, and finds out what her letter says. When Matt later drops her off in Sydney, and watches her leave the Conservatorium of Music, he follows her to see what is going on. Sonny and Skippy make a trap, but end up catching Mark instead! It turns out that Clancy is helping Sonny with his lessons and Mark switched Clancy's mother's letter. And that Clancy could win a scholarship.