Sign of the Green Arrow A Mystery Story

"Sign of the Green Arrow" by Roy J. Snell is a thrilling mystery set in the late 1930s in which the young Johnny Thompson finds himself on a scientific expedition aboard the "Sea Nymph", where adventure and danger lurk around every corner. While working a lonely shift, Johnny spots a strange green light emanating from a nearby island, sparking a journey filled with curiosity and risk. He soon crosses paths with Doris, a blonde girl, and her grandfather, Professor Casper, who share Johnny's fascination with the signal. Together, they uncover whispers of espionage and hints of native unrest that raise the stakes of their search, promising danger beneath the waves, hidden secrets on tropical shores, and a growing connection between Johnny and Doris as they seek to unravel the mystery behind the green arrow.