The Mysterious Visitor
Julie Campbell
Paperback
(Golden Press, Jan. 1, 1977)
Trixie and Honey befriend a lonely classmate and neighbour, Diana Lynch and become aware of her troubles and the arrival of a long-lost uncle. Trixie struggles to convince the others that he is an impostor and with Mart's help they manage to discover the truth, putting their lives at risk in the process.