Jim Brandon — biochemist, crime-fighter, and master of invisibility — picks up three chilling thought-waves on his Telepathic Indicator: the sound of lapping water, howling wind, and a desperate voice crying out the name "Scrawny." Then Inspector White calls with the news: a body has just washed ashore. In this atmospheric mystery from 1945, The Avenger takes to the waterfront to untangle a murder hidden beneath the tide — armed with his wits, his Secret Diffusion Capsule, and a mind tuned to frequencies most men never hear.